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Finding the Fourth Proportional to 266,053.36, 399,078.90 and 66,373.48

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Solution

The fourth proportional to 266,053.36, 399,078.90 and 66,373.48 is: 99,559.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,053.36 : 399,078.90 = 66,373.48 : x
  2. Step 2: Convert to fraction form
    266,053.36/399,078.90 = 66,373.48/x
  3. Step 3: Cross multiply
    266,053.36x = 399,078.90 × 66,373.48
  4. Step 4: Simplify right side
    266,053.36x = 26,488,255,387.57
  5. Step 5: Solve for x
    x = 26,488,255,387.57/266,053.36
  6. Step 6: Final answer
    x = 99,559.94

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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.