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Finding the Fourth Proportional to 269,671.80, 372,221.10 and 156,531

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Solution

The fourth proportional to 269,671.80, 372,221.10 and 156,531 is: 216,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,671.80 : 372,221.10 = 156,531 : x
  2. Step 2: Convert to fraction form
    269,671.80/372,221.10 = 156,531/x
  3. Step 3: Cross multiply
    269,671.80x = 372,221.10 × 156,531
  4. Step 4: Simplify right side
    269,671.80x = 58,264,141,004.10
  5. Step 5: Solve for x
    x = 58,264,141,004.10/269,671.80
  6. Step 6: Final answer
    x = 216,055.74

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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.