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Finding the Fourth Proportional to 287,851.48, 431,806.02 and 88,169.56

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Solution

The fourth proportional to 287,851.48, 431,806.02 and 88,169.56 is: 132,263.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,851.48 : 431,806.02 = 88,169.56 : x
  2. Step 2: Convert to fraction form
    287,851.48/431,806.02 = 88,169.56/x
  3. Step 3: Cross multiply
    287,851.48x = 431,806.02 × 88,169.56
  4. Step 4: Simplify right side
    287,851.48x = 38,072,146,788.75
  5. Step 5: Solve for x
    x = 38,072,146,788.75/287,851.48
  6. Step 6: Final answer
    x = 132,263.16

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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.