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Finding the Fourth Proportional to 485,218.72, 669,592.92 and 270,354.16

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Solution

The fourth proportional to 485,218.72, 669,592.92 and 270,354.16 is: 373,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,218.72 : 669,592.92 = 270,354.16 : x
  2. Step 2: Convert to fraction form
    485,218.72/669,592.92 = 270,354.16/x
  3. Step 3: Cross multiply
    485,218.72x = 669,592.92 × 270,354.16
  4. Step 4: Simplify right side
    485,218.72x = 181,027,231,428.55
  5. Step 5: Solve for x
    x = 181,027,231,428.55/485,218.72
  6. Step 6: Final answer
    x = 373,083.77

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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.