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Finding the Fourth Proportional to 472,978.01, 709,447.17 and 220,171.61

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Solution

The fourth proportional to 472,978.01, 709,447.17 and 220,171.61 is: 330,248.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,978.01 : 709,447.17 = 220,171.61 : x
  2. Step 2: Convert to fraction form
    472,978.01/709,447.17 = 220,171.61/x
  3. Step 3: Cross multiply
    472,978.01x = 709,447.17 × 220,171.61
  4. Step 4: Simplify right side
    472,978.01x = 156,200,125,628.84
  5. Step 5: Solve for x
    x = 156,200,125,628.84/472,978.01
  6. Step 6: Final answer
    x = 330,248.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.