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Finding the Fourth Proportional to 485,079.64, 669,366.48 and 270,215.08

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Solution

The fourth proportional to 485,079.64, 669,366.48 and 270,215.08 is: 372,872.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,079.64 : 669,366.48 = 270,215.08 : x
  2. Step 2: Convert to fraction form
    485,079.64/669,366.48 = 270,215.08/x
  3. Step 3: Cross multiply
    485,079.64x = 669,366.48 × 270,215.08
  4. Step 4: Simplify right side
    485,079.64x = 180,872,916,942.52
  5. Step 5: Solve for x
    x = 180,872,916,942.52/485,079.64
  6. Step 6: Final answer
    x = 372,872.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.