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Finding the Fourth Proportional to 391,101.04, 539,719.44 and 212,253.04

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Solution

The fourth proportional to 391,101.04, 539,719.44 and 212,253.04 is: 292,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,101.04 : 539,719.44 = 212,253.04 : x
  2. Step 2: Convert to fraction form
    391,101.04/539,719.44 = 212,253.04/x
  3. Step 3: Cross multiply
    391,101.04x = 539,719.44 × 212,253.04
  4. Step 4: Simplify right side
    391,101.04x = 114,557,091,887.10
  5. Step 5: Solve for x
    x = 114,557,091,887.10/391,101.04
  6. Step 6: Final answer
    x = 292,909.20

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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.