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Finding the Fourth Proportional to 486,891.40, 671,843.34 and 272,004.76

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Solution

The fourth proportional to 486,891.40, 671,843.34 and 272,004.76 is: 375,329.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,891.40 : 671,843.34 = 272,004.76 : x
  2. Step 2: Convert to fraction form
    486,891.40/671,843.34 = 272,004.76/x
  3. Step 3: Cross multiply
    486,891.40x = 671,843.34 × 272,004.76
  4. Step 4: Simplify right side
    486,891.40x = 182,744,586,454.30
  5. Step 5: Solve for x
    x = 182,744,586,454.30/486,891.40
  6. Step 6: Final answer
    x = 375,329.26

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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.