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Finding the Fourth Proportional to 266,480.32, 399,603.36 and 141,791.68

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Solution

The fourth proportional to 266,480.32, 399,603.36 and 141,791.68 is: 212,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,480.32 : 399,603.36 = 141,791.68 : x
  2. Step 2: Convert to fraction form
    266,480.32/399,603.36 = 141,791.68/x
  3. Step 3: Cross multiply
    266,480.32x = 399,603.36 × 141,791.68
  4. Step 4: Simplify right side
    266,480.32x = 56,660,431,748.04
  5. Step 5: Solve for x
    x = 56,660,431,748.04/266,480.32
  6. Step 6: Final answer
    x = 212,625.20

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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.