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Finding the Fourth Proportional to 266,051.76, 399,067.92 and 79,058.40

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Solution

The fourth proportional to 266,051.76, 399,067.92 and 79,058.40 is: 118,584.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,051.76 : 399,067.92 = 79,058.40 : x
  2. Step 2: Convert to fraction form
    266,051.76/399,067.92 = 79,058.40/x
  3. Step 3: Cross multiply
    266,051.76x = 399,067.92 × 79,058.40
  4. Step 4: Simplify right side
    266,051.76x = 31,549,671,246.53
  5. Step 5: Solve for x
    x = 31,549,671,246.53/266,051.76
  6. Step 6: Final answer
    x = 118,584.71

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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.