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Finding the Fourth Proportional to 392,116.80, 588,758.40 and 303,470.40

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Solution

The fourth proportional to 392,116.80, 588,758.40 and 303,470.40 is: 455,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,116.80 : 588,758.40 = 303,470.40 : x
  2. Step 2: Convert to fraction form
    392,116.80/588,758.40 = 303,470.40/x
  3. Step 3: Cross multiply
    392,116.80x = 588,758.40 × 303,470.40
  4. Step 4: Simplify right side
    392,116.80x = 178,670,747,151.36
  5. Step 5: Solve for x
    x = 178,670,747,151.36/392,116.80
  6. Step 6: Final answer
    x = 455,656.96

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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.