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Finding the Fourth Proportional to 345,589.76, 518,306.87 and 123,973.76

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Solution

The fourth proportional to 345,589.76, 518,306.87 and 123,973.76 is: 185,932.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,589.76 : 518,306.87 = 123,973.76 : x
  2. Step 2: Convert to fraction form
    345,589.76/518,306.87 = 123,973.76/x
  3. Step 3: Cross multiply
    345,589.76x = 518,306.87 × 123,973.76
  4. Step 4: Simplify right side
    345,589.76x = 64,256,449,226.13
  5. Step 5: Solve for x
    x = 64,256,449,226.13/345,589.76
  6. Step 6: Final answer
    x = 185,932.74

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1.5x scale

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.