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Finding the Fourth Proportional to 392,430.30, 587,770.65 and 303,200.70

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Solution

The fourth proportional to 392,430.30, 587,770.65 and 303,200.70 is: 454,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,430.30 : 587,770.65 = 303,200.70 : x
  2. Step 2: Convert to fraction form
    392,430.30/587,770.65 = 303,200.70/x
  3. Step 3: Cross multiply
    392,430.30x = 587,770.65 × 303,200.70
  4. Step 4: Simplify right side
    392,430.30x = 178,212,472,519.46
  5. Step 5: Solve for x
    x = 178,212,472,519.46/392,430.30
  6. Step 6: Final answer
    x = 454,125.16

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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.