Home / 312,271,340,787.53-430,775,853,345.91-203,947,845,649.72

Finding the Fourth Proportional to 312,271,340,787.53, 430,775,853,345.91 and 203,947,845,649.72

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Solution

The fourth proportional to 312,271,340,787.53, 430,775,853,345.91 and 203,947,845,649.72 is: 281,344,445,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,271,340,787.53 : 430,775,853,345.91 = 203,947,845,649.72 : x
  2. Step 2: Convert to fraction form
    312,271,340,787.53/430,775,853,345.91 = 203,947,845,649.72/x
  3. Step 3: Cross multiply
    312,271,340,787.53x = 430,775,853,345.91 × 203,947,845,649.72
  4. Step 4: Simplify right side
    312,271,340,787.53x = 87,855,807,247,818,067,804,160
  5. Step 5: Solve for x
    x = 87,855,807,247,818,067,804,160/312,271,340,787.53
  6. Step 6: Final answer
    x = 281,344,445,590.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.