Home / 278,960.10-418,440.15-166,985.70

Finding the Fourth Proportional to 278,960.10, 418,440.15 and 166,985.70

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Solution

The fourth proportional to 278,960.10, 418,440.15 and 166,985.70 is: 250,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,960.10 : 418,440.15 = 166,985.70 : x
  2. Step 2: Convert to fraction form
    278,960.10/418,440.15 = 166,985.70/x
  3. Step 3: Cross multiply
    278,960.10x = 418,440.15 × 166,985.70
  4. Step 4: Simplify right side
    278,960.10x = 69,873,521,355.86
  5. Step 5: Solve for x
    x = 69,873,521,355.86/278,960.10
  6. Step 6: Final answer
    x = 250,478.55

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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.