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Finding the Fourth Proportional to 391,301.92, 585,948.51 and 271,187.68

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Solution

The fourth proportional to 391,301.92, 585,948.51 and 271,187.68 is: 406,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,301.92 : 585,948.51 = 271,187.68 : x
  2. Step 2: Convert to fraction form
    391,301.92/585,948.51 = 271,187.68/x
  3. Step 3: Cross multiply
    391,301.92x = 585,948.51 × 271,187.68
  4. Step 4: Simplify right side
    391,301.92x = 158,902,017,026.36
  5. Step 5: Solve for x
    x = 158,902,017,026.36/391,301.92
  6. Step 6: Final answer
    x = 406,085.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.