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Finding the Fourth Proportional to 272,649.98, 376,244.79 and 156,280.02

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Solution

The fourth proportional to 272,649.98, 376,244.79 and 156,280.02 is: 215,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,649.98 : 376,244.79 = 156,280.02 : x
  2. Step 2: Convert to fraction form
    272,649.98/376,244.79 = 156,280.02/x
  3. Step 3: Cross multiply
    272,649.98x = 376,244.79 × 156,280.02
  4. Step 4: Simplify right side
    272,649.98x = 58,799,543,306.10
  5. Step 5: Solve for x
    x = 58,799,543,306.10/272,649.98
  6. Step 6: Final answer
    x = 215,659.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.