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Finding the Fourth Proportional to 288,418.56, 432,705.92 and 88,734.72

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Solution

The fourth proportional to 288,418.56, 432,705.92 and 88,734.72 is: 133,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,418.56 : 432,705.92 = 88,734.72 : x
  2. Step 2: Convert to fraction form
    288,418.56/432,705.92 = 88,734.72/x
  3. Step 3: Cross multiply
    288,418.56x = 432,705.92 × 88,734.72
  4. Step 4: Simplify right side
    288,418.56x = 38,396,038,653.54
  5. Step 5: Solve for x
    x = 38,396,038,653.54/288,418.56
  6. Step 6: Final answer
    x = 133,126.10

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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.