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Finding the Fourth Proportional to 287,765.44, 431,632.76 and 88,085.92

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Solution

The fourth proportional to 287,765.44, 431,632.76 and 88,085.92 is: 132,124.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,765.44 : 431,632.76 = 88,085.92 : x
  2. Step 2: Convert to fraction form
    287,765.44/431,632.76 = 88,085.92/x
  3. Step 3: Cross multiply
    287,765.44x = 431,632.76 × 88,085.92
  4. Step 4: Simplify right side
    287,765.44x = 38,020,768,766.74
  5. Step 5: Solve for x
    x = 38,020,768,766.74/287,765.44
  6. Step 6: Final answer
    x = 132,124.17

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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.