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Finding the Fourth Proportional to 392,499.80, 588,749.70 and 97,011.80

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Solution

The fourth proportional to 392,499.80, 588,749.70 and 97,011.80 is: 145,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,499.80 : 588,749.70 = 97,011.80 : x
  2. Step 2: Convert to fraction form
    392,499.80/588,749.70 = 97,011.80/x
  3. Step 3: Cross multiply
    392,499.80x = 588,749.70 × 97,011.80
  4. Step 4: Simplify right side
    392,499.80x = 57,115,668,146.46
  5. Step 5: Solve for x
    x = 57,115,668,146.46/392,499.80
  6. Step 6: Final answer
    x = 145,517.70

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1.5x scale

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.