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Finding the Fourth Proportional to 485,077.64, 669,363.72 and 270,213.10

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Solution

The fourth proportional to 485,077.64, 669,363.72 and 270,213.10 is: 372,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,077.64 : 669,363.72 = 270,213.10 : x
  2. Step 2: Convert to fraction form
    485,077.64/669,363.72 = 270,213.10/x
  3. Step 3: Cross multiply
    485,077.64x = 669,363.72 × 270,213.10
  4. Step 4: Simplify right side
    485,077.64x = 180,870,845,808.73
  5. Step 5: Solve for x
    x = 180,870,845,808.73/485,077.64
  6. Step 6: Final answer
    x = 372,869.89

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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.