Home / 312,271,340,789.40-430,775,853,348.51-203,947,845,651.57

Finding the Fourth Proportional to 312,271,340,789.40, 430,775,853,348.51 and 203,947,845,651.57

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Solution

The fourth proportional to 312,271,340,789.40, 430,775,853,348.51 and 203,947,845,651.57 is: 281,344,445,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,271,340,789.40 : 430,775,853,348.51 = 203,947,845,651.57 : x
  2. Step 2: Convert to fraction form
    312,271,340,789.40/430,775,853,348.51 = 203,947,845,651.57/x
  3. Step 3: Cross multiply
    312,271,340,789.40x = 430,775,853,348.51 × 203,947,845,651.57
  4. Step 4: Simplify right side
    312,271,340,789.40x = 87,855,807,249,145,279,807,488
  5. Step 5: Solve for x
    x = 87,855,807,249,145,279,807,488/312,271,340,789.40
  6. Step 6: Final answer
    x = 281,344,445,593.54

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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.