Home / 280,844.06-387,470.16-159,899.79

Finding the Fourth Proportional to 280,844.06, 387,470.16 and 159,899.79

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Solution

The fourth proportional to 280,844.06, 387,470.16 and 159,899.79 is: 220,607.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,844.06 : 387,470.16 = 159,899.79 : x
  2. Step 2: Convert to fraction form
    280,844.06/387,470.16 = 159,899.79/x
  3. Step 3: Cross multiply
    280,844.06x = 387,470.16 × 159,899.79
  4. Step 4: Simplify right side
    280,844.06x = 61,956,396,039.04
  5. Step 5: Solve for x
    x = 61,956,396,039.04/280,844.06
  6. Step 6: Final answer
    x = 220,607.82

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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.