Home / 278,842.95-384,808.05-157,981.23

Finding the Fourth Proportional to 278,842.95, 384,808.05 and 157,981.23

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Solution

The fourth proportional to 278,842.95, 384,808.05 and 157,981.23 is: 218,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,842.95 : 384,808.05 = 157,981.23 : x
  2. Step 2: Convert to fraction form
    278,842.95/384,808.05 = 157,981.23/x
  3. Step 3: Cross multiply
    278,842.95x = 384,808.05 × 157,981.23
  4. Step 4: Simplify right side
    278,842.95x = 60,792,449,052.90
  5. Step 5: Solve for x
    x = 60,792,449,052.90/278,842.95
  6. Step 6: Final answer
    x = 218,016.80

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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.