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Finding the Fourth Proportional to 336,581.68, 505,020.76 and 261,589.46

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Solution

The fourth proportional to 336,581.68, 505,020.76 and 261,589.46 is: 392,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,581.68 : 505,020.76 = 261,589.46 : x
  2. Step 2: Convert to fraction form
    336,581.68/505,020.76 = 261,589.46/x
  3. Step 3: Cross multiply
    336,581.68x = 505,020.76 × 261,589.46
  4. Step 4: Simplify right side
    336,581.68x = 132,108,107,897.19
  5. Step 5: Solve for x
    x = 132,108,107,897.19/336,581.68
  6. Step 6: Final answer
    x = 392,499.40

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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.