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Finding the Fourth Proportional to 392,117.40, 588,176.10 and 303,434.55

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Solution

The fourth proportional to 392,117.40, 588,176.10 and 303,434.55 is: 455,151.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,117.40 : 588,176.10 = 303,434.55 : x
  2. Step 2: Convert to fraction form
    392,117.40/588,176.10 = 303,434.55/x
  3. Step 3: Cross multiply
    392,117.40x = 588,176.10 × 303,434.55
  4. Step 4: Simplify right side
    392,117.40x = 178,472,950,224.26
  5. Step 5: Solve for x
    x = 178,472,950,224.26/392,117.40
  6. Step 6: Final answer
    x = 455,151.83

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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.