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Finding the Fourth Proportional to 392,607.46, 588,914.26 and 215,017.59

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Solution

The fourth proportional to 392,607.46, 588,914.26 and 215,017.59 is: 322,528.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,607.46 : 588,914.26 = 215,017.59 : x
  2. Step 2: Convert to fraction form
    392,607.46/588,914.26 = 215,017.59/x
  3. Step 3: Cross multiply
    392,607.46x = 588,914.26 × 215,017.59
  4. Step 4: Simplify right side
    392,607.46x = 126,626,926,572.72
  5. Step 5: Solve for x
    x = 126,626,926,572.72/392,607.46
  6. Step 6: Final answer
    x = 322,528.07

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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.