Home / 280,129.32-386,562.92-159,253.83

Finding the Fourth Proportional to 280,129.32, 386,562.92 and 159,253.83

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Solution

The fourth proportional to 280,129.32, 386,562.92 and 159,253.83 is: 219,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,129.32 : 386,562.92 = 159,253.83 : x
  2. Step 2: Convert to fraction form
    280,129.32/386,562.92 = 159,253.83/x
  3. Step 3: Cross multiply
    280,129.32x = 386,562.92 × 159,253.83
  4. Step 4: Simplify right side
    280,129.32x = 61,561,624,749.71
  5. Step 5: Solve for x
    x = 61,561,624,749.71/280,129.32
  6. Step 6: Final answer
    x = 219,761.45

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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.