Home / 280,269.47-386,793.27-159,403.55

Finding the Fourth Proportional to 280,269.47, 386,793.27 and 159,403.55

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Solution

The fourth proportional to 280,269.47, 386,793.27 and 159,403.55 is: 219,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,269.47 : 386,793.27 = 159,403.55 : x
  2. Step 2: Convert to fraction form
    280,269.47/386,793.27 = 159,403.55/x
  3. Step 3: Cross multiply
    280,269.47x = 386,793.27 × 159,403.55
  4. Step 4: Simplify right side
    280,269.47x = 61,656,218,420.14
  5. Step 5: Solve for x
    x = 61,656,218,420.14/280,269.47
  6. Step 6: Final answer
    x = 219,989.06

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1.5x scale

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.