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Finding the Fourth Proportional to 485,248.47, 669,633.84 and 270,383.96

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Solution

The fourth proportional to 485,248.47, 669,633.84 and 270,383.96 is: 373,124.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,248.47 : 669,633.84 = 270,383.96 : x
  2. Step 2: Convert to fraction form
    485,248.47/669,633.84 = 270,383.96/x
  3. Step 3: Cross multiply
    485,248.47x = 669,633.84 × 270,383.96
  4. Step 4: Simplify right side
    485,248.47x = 181,058,246,061.04
  5. Step 5: Solve for x
    x = 181,058,246,061.04/485,248.47
  6. Step 6: Final answer
    x = 373,124.82

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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.