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Finding the Fourth Proportional to 283,363.52, 391,042.24 and 156,039.36

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Solution

The fourth proportional to 283,363.52, 391,042.24 and 156,039.36 is: 215,334.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,363.52 : 391,042.24 = 156,039.36 : x
  2. Step 2: Convert to fraction form
    283,363.52/391,042.24 = 156,039.36/x
  3. Step 3: Cross multiply
    283,363.52x = 391,042.24 × 156,039.36
  4. Step 4: Simplify right side
    283,363.52x = 61,017,980,862.57
  5. Step 5: Solve for x
    x = 61,017,980,862.57/283,363.52
  6. Step 6: Final answer
    x = 215,334.64

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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.