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Finding the Fourth Proportional to 168,404,689.20, 252,607,033.80 and 155,807,569.20

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Solution

The fourth proportional to 168,404,689.20, 252,607,033.80 and 155,807,569.20 is: 233,711,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,404,689.20 : 252,607,033.80 = 155,807,569.20 : x
  2. Step 2: Convert to fraction form
    168,404,689.20/252,607,033.80 = 155,807,569.20/x
  3. Step 3: Cross multiply
    168,404,689.20x = 252,607,033.80 × 155,807,569.20
  4. Step 4: Simplify right side
    168,404,689.20x = 39,358,087,899,200,240
  5. Step 5: Solve for x
    x = 39,358,087,899,200,240/168,404,689.20
  6. Step 6: Final answer
    x = 233,711,353.80

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1.5x scale

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.