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Finding the Fourth Proportional to 266,274.63, 399,415.47 and 88,781.70

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Solution

The fourth proportional to 266,274.63, 399,415.47 and 88,781.70 is: 133,173.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,274.63 : 399,415.47 = 88,781.70 : x
  2. Step 2: Convert to fraction form
    266,274.63/399,415.47 = 88,781.70/x
  3. Step 3: Cross multiply
    266,274.63x = 399,415.47 × 88,781.70
  4. Step 4: Simplify right side
    266,274.63x = 35,460,784,432.90
  5. Step 5: Solve for x
    x = 35,460,784,432.90/266,274.63
  6. Step 6: Final answer
    x = 133,173.73

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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.