Home / 280,267.17-386,780.31-159,429.75

Finding the Fourth Proportional to 280,267.17, 386,780.31 and 159,429.75

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Solution

The fourth proportional to 280,267.17, 386,780.31 and 159,429.75 is: 220,019.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,267.17 : 386,780.31 = 159,429.75 : x
  2. Step 2: Convert to fraction form
    280,267.17/386,780.31 = 159,429.75/x
  3. Step 3: Cross multiply
    280,267.17x = 386,780.31 × 159,429.75
  4. Step 4: Simplify right side
    280,267.17x = 61,664,288,128.22
  5. Step 5: Solve for x
    x = 61,664,288,128.22/280,267.17
  6. Step 6: Final answer
    x = 220,019.66

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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.