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Finding the Fourth Proportional to 438,513.92, 657,770.83 and 165,011.55

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Solution

The fourth proportional to 438,513.92, 657,770.83 and 165,011.55 is: 247,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,513.92 : 657,770.83 = 165,011.55 : x
  2. Step 2: Convert to fraction form
    438,513.92/657,770.83 = 165,011.55/x
  3. Step 3: Cross multiply
    438,513.92x = 657,770.83 × 165,011.55
  4. Step 4: Simplify right side
    438,513.92x = 108,539,781,323.92
  5. Step 5: Solve for x
    x = 108,539,781,323.92/438,513.92
  6. Step 6: Final answer
    x = 247,517.30

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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.