Home / 345,041.28-517,561.60-155,279.84

Finding the Fourth Proportional to 345,041.28, 517,561.60 and 155,279.84

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Solution

The fourth proportional to 345,041.28, 517,561.60 and 155,279.84 is: 232,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,041.28 : 517,561.60 = 155,279.84 : x
  2. Step 2: Convert to fraction form
    345,041.28/517,561.60 = 155,279.84/x
  3. Step 3: Cross multiply
    345,041.28x = 517,561.60 × 155,279.84
  4. Step 4: Simplify right side
    345,041.28x = 80,366,882,438.14
  5. Step 5: Solve for x
    x = 80,366,882,438.14/345,041.28
  6. Step 6: Final answer
    x = 232,919.62

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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.