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Finding the Fourth Proportional to 363,403.20, 545,129.10 and 123,513.60

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Solution

The fourth proportional to 363,403.20, 545,129.10 and 123,513.60 is: 185,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,403.20 : 545,129.10 = 123,513.60 : x
  2. Step 2: Convert to fraction form
    363,403.20/545,129.10 = 123,513.60/x
  3. Step 3: Cross multiply
    363,403.20x = 545,129.10 × 123,513.60
  4. Step 4: Simplify right side
    363,403.20x = 67,330,857,605.76
  5. Step 5: Solve for x
    x = 67,330,857,605.76/363,403.20
  6. Step 6: Final answer
    x = 185,278.66

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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.