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Finding the Fourth Proportional to 266,722.90, 399,100.20 and 243,103.30

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Solution

The fourth proportional to 266,722.90, 399,100.20 and 243,103.30 is: 363,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,722.90 : 399,100.20 = 243,103.30 : x
  2. Step 2: Convert to fraction form
    266,722.90/399,100.20 = 243,103.30/x
  3. Step 3: Cross multiply
    266,722.90x = 399,100.20 × 243,103.30
  4. Step 4: Simplify right side
    266,722.90x = 97,022,575,650.66
  5. Step 5: Solve for x
    x = 97,022,575,650.66/266,722.90
  6. Step 6: Final answer
    x = 363,757.95

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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.