Home / 280,917.18-387,570.74-159,972.71

Finding the Fourth Proportional to 280,917.18, 387,570.74 and 159,972.71

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Solution

The fourth proportional to 280,917.18, 387,570.74 and 159,972.71 is: 220,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,917.18 : 387,570.74 = 159,972.71 : x
  2. Step 2: Convert to fraction form
    280,917.18/387,570.74 = 159,972.71/x
  3. Step 3: Cross multiply
    280,917.18x = 387,570.74 × 159,972.71
  4. Step 4: Simplify right side
    280,917.18x = 62,000,738,856.79
  5. Step 5: Solve for x
    x = 62,000,738,856.79/280,917.18
  6. Step 6: Final answer
    x = 220,708.25

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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.