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Finding the Fourth Proportional to 363,382.17, 545,109.54 and 138,931.39

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Solution

The fourth proportional to 363,382.17, 545,109.54 and 138,931.39 is: 208,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,382.17 : 545,109.54 = 138,931.39 : x
  2. Step 2: Convert to fraction form
    363,382.17/545,109.54 = 138,931.39/x
  3. Step 3: Cross multiply
    363,382.17x = 545,109.54 × 138,931.39
  4. Step 4: Simplify right side
    363,382.17x = 75,732,826,094.46
  5. Step 5: Solve for x
    x = 75,732,826,094.46/363,382.17
  6. Step 6: Final answer
    x = 208,410.96

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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.