Home / 315,235,221.80-472,056,570.30-206,943,535.40

Finding the Fourth Proportional to 315,235,221.80, 472,056,570.30 and 206,943,535.40

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Solution

The fourth proportional to 315,235,221.80, 472,056,570.30 and 206,943,535.40 is: 309,892,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,235,221.80 : 472,056,570.30 = 206,943,535.40 : x
  2. Step 2: Convert to fraction form
    315,235,221.80/472,056,570.30 = 206,943,535.40/x
  3. Step 3: Cross multiply
    315,235,221.80x = 472,056,570.30 × 206,943,535.40
  4. Step 4: Simplify right side
    315,235,221.80x = 97,689,055,566,680,640
  5. Step 5: Solve for x
    x = 97,689,055,566,680,640/315,235,221.80
  6. Step 6: Final answer
    x = 309,892,578.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.