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Finding the Fourth Proportional to 642,591.93, 963,898.13 and 243,125.45

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Solution

The fourth proportional to 642,591.93, 963,898.13 and 243,125.45 is: 364,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,591.93 : 963,898.13 = 243,125.45 : x
  2. Step 2: Convert to fraction form
    642,591.93/963,898.13 = 243,125.45/x
  3. Step 3: Cross multiply
    642,591.93x = 963,898.13 × 243,125.45
  4. Step 4: Simplify right side
    642,591.93x = 234,348,160,575.29
  5. Step 5: Solve for x
    x = 234,348,160,575.29/642,591.93
  6. Step 6: Final answer
    x = 364,692.04

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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.