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Finding the Fourth Proportional to 453,540.80, 681,002.40 and 266,916.80

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Solution

The fourth proportional to 453,540.80, 681,002.40 and 266,916.80 is: 400,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,540.80 : 681,002.40 = 266,916.80 : x
  2. Step 2: Convert to fraction form
    453,540.80/681,002.40 = 266,916.80/x
  3. Step 3: Cross multiply
    453,540.80x = 681,002.40 × 266,916.80
  4. Step 4: Simplify right side
    453,540.80x = 181,770,981,400.32
  5. Step 5: Solve for x
    x = 181,770,981,400.32/453,540.80
  6. Step 6: Final answer
    x = 400,781.98

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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.