Home / 221,811.20-306,154.40-126,374.56

Finding the Fourth Proportional to 221,811.20, 306,154.40 and 126,374.56

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Solution

The fourth proportional to 221,811.20, 306,154.40 and 126,374.56 is: 174,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,811.20 : 306,154.40 = 126,374.56 : x
  2. Step 2: Convert to fraction form
    221,811.20/306,154.40 = 126,374.56/x
  3. Step 3: Cross multiply
    221,811.20x = 306,154.40 × 126,374.56
  4. Step 4: Simplify right side
    221,811.20x = 38,690,127,592.06
  5. Step 5: Solve for x
    x = 38,690,127,592.06/221,811.20
  6. Step 6: Final answer
    x = 174,428.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.