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Finding the Fourth Proportional to 353,695.20, 530,542.80 and 283,711.20

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Solution

The fourth proportional to 353,695.20, 530,542.80 and 283,711.20 is: 425,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,695.20 : 530,542.80 = 283,711.20 : x
  2. Step 2: Convert to fraction form
    353,695.20/530,542.80 = 283,711.20/x
  3. Step 3: Cross multiply
    353,695.20x = 530,542.80 × 283,711.20
  4. Step 4: Simplify right side
    353,695.20x = 150,520,934,439.36
  5. Step 5: Solve for x
    x = 150,520,934,439.36/353,695.20
  6. Step 6: Final answer
    x = 425,566.80

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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.