Home / 260,423.28-390,528-82,882.62

Finding the Fourth Proportional to 260,423.28, 390,528 and 82,882.62

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Solution

The fourth proportional to 260,423.28, 390,528 and 82,882.62 is: 124,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,423.28 : 390,528 = 82,882.62 : x
  2. Step 2: Convert to fraction form
    260,423.28/390,528 = 82,882.62/x
  3. Step 3: Cross multiply
    260,423.28x = 390,528 × 82,882.62
  4. Step 4: Simplify right side
    260,423.28x = 32,367,983,823.36
  5. Step 5: Solve for x
    x = 32,367,983,823.36/260,423.28
  6. Step 6: Final answer
    x = 124,289.90

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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.