Home / 280,234.08-386,731.55-159,392.74

Finding the Fourth Proportional to 280,234.08, 386,731.55 and 159,392.74

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Solution

The fourth proportional to 280,234.08, 386,731.55 and 159,392.74 is: 219,966.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,234.08 : 386,731.55 = 159,392.74 : x
  2. Step 2: Convert to fraction form
    280,234.08/386,731.55 = 159,392.74/x
  3. Step 3: Cross multiply
    280,234.08x = 386,731.55 × 159,392.74
  4. Step 4: Simplify right side
    280,234.08x = 61,642,201,398.95
  5. Step 5: Solve for x
    x = 61,642,201,398.95/280,234.08
  6. Step 6: Final answer
    x = 219,966.83

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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.