Home / 278,657.18-418,001.56-89,134.18

Finding the Fourth Proportional to 278,657.18, 418,001.56 and 89,134.18

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Solution

The fourth proportional to 278,657.18, 418,001.56 and 89,134.18 is: 133,706.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,657.18 : 418,001.56 = 89,134.18 : x
  2. Step 2: Convert to fraction form
    278,657.18/418,001.56 = 89,134.18/x
  3. Step 3: Cross multiply
    278,657.18x = 418,001.56 × 89,134.18
  4. Step 4: Simplify right side
    278,657.18x = 37,258,226,289.32
  5. Step 5: Solve for x
    x = 37,258,226,289.32/278,657.18
  6. Step 6: Final answer
    x = 133,706.32

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1.5x scale

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.