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Finding the Fourth Proportional to 392,496.80, 588,745.20 and 97,008.80

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Solution

The fourth proportional to 392,496.80, 588,745.20 and 97,008.80 is: 145,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,496.80 : 588,745.20 = 97,008.80 : x
  2. Step 2: Convert to fraction form
    392,496.80/588,745.20 = 97,008.80/x
  3. Step 3: Cross multiply
    392,496.80x = 588,745.20 × 97,008.80
  4. Step 4: Simplify right side
    392,496.80x = 57,113,465,357.76
  5. Step 5: Solve for x
    x = 57,113,465,357.76/392,496.80
  6. Step 6: Final answer
    x = 145,513.20

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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.