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Finding the Fourth Proportional to 461,332.97, 636,639.59 and 260,128.97

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Solution

The fourth proportional to 461,332.97, 636,639.59 and 260,128.97 is: 358,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,332.97 : 636,639.59 = 260,128.97 : x
  2. Step 2: Convert to fraction form
    461,332.97/636,639.59 = 260,128.97/x
  3. Step 3: Cross multiply
    461,332.97x = 636,639.59 × 260,128.97
  4. Step 4: Simplify right side
    461,332.97x = 165,608,399,507.28
  5. Step 5: Solve for x
    x = 165,608,399,507.28/461,332.97
  6. Step 6: Final answer
    x = 358,978.03

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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.