Home / 260,329.79-390,503.27-89,549.78

Finding the Fourth Proportional to 260,329.79, 390,503.27 and 89,549.78

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Solution

The fourth proportional to 260,329.79, 390,503.27 and 89,549.78 is: 134,327.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,329.79 : 390,503.27 = 89,549.78 : x
  2. Step 2: Convert to fraction form
    260,329.79/390,503.27 = 89,549.78/x
  3. Step 3: Cross multiply
    260,329.79x = 390,503.27 × 89,549.78
  4. Step 4: Simplify right side
    260,329.79x = 34,969,479,517.52
  5. Step 5: Solve for x
    x = 34,969,479,517.52/260,329.79
  6. Step 6: Final answer
    x = 134,327.62

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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.