Home / 260,292.20-390,438.30-155,229.80

Finding the Fourth Proportional to 260,292.20, 390,438.30 and 155,229.80

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Solution

The fourth proportional to 260,292.20, 390,438.30 and 155,229.80 is: 232,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,292.20 : 390,438.30 = 155,229.80 : x
  2. Step 2: Convert to fraction form
    260,292.20/390,438.30 = 155,229.80/x
  3. Step 3: Cross multiply
    260,292.20x = 390,438.30 × 155,229.80
  4. Step 4: Simplify right side
    260,292.20x = 60,607,659,221.34
  5. Step 5: Solve for x
    x = 60,607,659,221.34/260,292.20
  6. Step 6: Final answer
    x = 232,844.70

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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.