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Finding the Fourth Proportional to 453,680.64, 680,520.96 and 121,248

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Solution

The fourth proportional to 453,680.64, 680,520.96 and 121,248 is: 181,872

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,680.64 : 680,520.96 = 121,248 : x
  2. Step 2: Convert to fraction form
    453,680.64/680,520.96 = 121,248/x
  3. Step 3: Cross multiply
    453,680.64x = 680,520.96 × 121,248
  4. Step 4: Simplify right side
    453,680.64x = 82,511,805,358.08
  5. Step 5: Solve for x
    x = 82,511,805,358.08/453,680.64
  6. Step 6: Final answer
    x = 181,872

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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.