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Finding the Fourth Proportional to 365,140.80, 547,711.20 and 302,932.80

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Solution

The fourth proportional to 365,140.80, 547,711.20 and 302,932.80 is: 454,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,140.80 : 547,711.20 = 302,932.80 : x
  2. Step 2: Convert to fraction form
    365,140.80/547,711.20 = 302,932.80/x
  3. Step 3: Cross multiply
    365,140.80x = 547,711.20 × 302,932.80
  4. Step 4: Simplify right side
    365,140.80x = 165,919,687,407.36
  5. Step 5: Solve for x
    x = 165,919,687,407.36/365,140.80
  6. Step 6: Final answer
    x = 454,399.20

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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.