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Finding the Fourth Proportional to 261,368.56, 391,875.42 and 132,969.28

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Solution

The fourth proportional to 261,368.56, 391,875.42 and 132,969.28 is: 199,363.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,368.56 : 391,875.42 = 132,969.28 : x
  2. Step 2: Convert to fraction form
    261,368.56/391,875.42 = 132,969.28/x
  3. Step 3: Cross multiply
    261,368.56x = 391,875.42 × 132,969.28
  4. Step 4: Simplify right side
    261,368.56x = 52,107,392,447.10
  5. Step 5: Solve for x
    x = 52,107,392,447.10/261,368.56
  6. Step 6: Final answer
    x = 199,363.66

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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.