Home / 268,868.20-402,816.30-156,456.40

Finding the Fourth Proportional to 268,868.20, 402,816.30 and 156,456.40

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Solution

The fourth proportional to 268,868.20, 402,816.30 and 156,456.40 is: 234,401.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,868.20 : 402,816.30 = 156,456.40 : x
  2. Step 2: Convert to fraction form
    268,868.20/402,816.30 = 156,456.40/x
  3. Step 3: Cross multiply
    268,868.20x = 402,816.30 × 156,456.40
  4. Step 4: Simplify right side
    268,868.20x = 63,023,188,159.32
  5. Step 5: Solve for x
    x = 63,023,188,159.32/268,868.20
  6. Step 6: Final answer
    x = 234,401.79

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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.