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Finding the Fourth Proportional to 287,925.30, 431,920.35 and 88,244.10

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Solution

The fourth proportional to 287,925.30, 431,920.35 and 88,244.10 is: 132,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,925.30 : 431,920.35 = 88,244.10 : x
  2. Step 2: Convert to fraction form
    287,925.30/431,920.35 = 88,244.10/x
  3. Step 3: Cross multiply
    287,925.30x = 431,920.35 × 88,244.10
  4. Step 4: Simplify right side
    287,925.30x = 38,114,422,557.44
  5. Step 5: Solve for x
    x = 38,114,422,557.44/287,925.30
  6. Step 6: Final answer
    x = 132,376.08

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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.