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Finding the Fourth Proportional to 485,218.47, 669,592.56 and 270,353.91

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Solution

The fourth proportional to 485,218.47, 669,592.56 and 270,353.91 is: 373,083.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,218.47 : 669,592.56 = 270,353.91 : x
  2. Step 2: Convert to fraction form
    485,218.47/669,592.56 = 270,353.91/x
  3. Step 3: Cross multiply
    485,218.47x = 669,592.56 × 270,353.91
  4. Step 4: Simplify right side
    485,218.47x = 181,026,966,702.91
  5. Step 5: Solve for x
    x = 181,026,966,702.91/485,218.47
  6. Step 6: Final answer
    x = 373,083.42

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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.