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Finding the Fourth Proportional to 478,474.53, 717,864.21 and 141,517.23

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Solution

The fourth proportional to 478,474.53, 717,864.21 and 141,517.23 is: 212,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,474.53 : 717,864.21 = 141,517.23 : x
  2. Step 2: Convert to fraction form
    478,474.53/717,864.21 = 141,517.23/x
  3. Step 3: Cross multiply
    478,474.53x = 717,864.21 × 141,517.23
  4. Step 4: Simplify right side
    478,474.53x = 101,590,154,515.34
  5. Step 5: Solve for x
    x = 101,590,154,515.34/478,474.53
  6. Step 6: Final answer
    x = 212,320.92

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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.