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Finding the Fourth Proportional to 266,530.60, 399,865.08 and 79,542.10

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Solution

The fourth proportional to 266,530.60, 399,865.08 and 79,542.10 is: 119,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,530.60 : 399,865.08 = 79,542.10 : x
  2. Step 2: Convert to fraction form
    266,530.60/399,865.08 = 79,542.10/x
  3. Step 3: Cross multiply
    266,530.60x = 399,865.08 × 79,542.10
  4. Step 4: Simplify right side
    266,530.60x = 31,806,108,179.87
  5. Step 5: Solve for x
    x = 31,806,108,179.87/266,530.60
  6. Step 6: Final answer
    x = 119,333.80

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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.