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Finding the Fourth Proportional to 391,094.39, 585,638.29 and 270,980.71

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Solution

The fourth proportional to 391,094.39, 585,638.29 and 270,980.71 is: 405,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,094.39 : 585,638.29 = 270,980.71 : x
  2. Step 2: Convert to fraction form
    391,094.39/585,638.29 = 270,980.71/x
  3. Step 3: Cross multiply
    391,094.39x = 585,638.29 × 270,980.71
  4. Step 4: Simplify right side
    391,094.39x = 158,696,679,627.39
  5. Step 5: Solve for x
    x = 158,696,679,627.39/391,094.39
  6. Step 6: Final answer
    x = 405,775.90

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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.