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Finding the Fourth Proportional to 391,319.13, 535,974.24 and 368,339.24

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Solution

The fourth proportional to 391,319.13, 535,974.24 and 368,339.24 is: 504,499.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,319.13 : 535,974.24 = 368,339.24 : x
  2. Step 2: Convert to fraction form
    391,319.13/535,974.24 = 368,339.24/x
  3. Step 3: Cross multiply
    391,319.13x = 535,974.24 × 368,339.24
  4. Step 4: Simplify right side
    391,319.13x = 197,420,341,541.31
  5. Step 5: Solve for x
    x = 197,420,341,541.31/391,319.13
  6. Step 6: Final answer
    x = 504,499.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.