Home / 280,936.57-387,717.80-160,116.79

Finding the Fourth Proportional to 280,936.57, 387,717.80 and 160,116.79

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Solution

The fourth proportional to 280,936.57, 387,717.80 and 160,116.79 is: 220,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,936.57 : 387,717.80 = 160,116.79 : x
  2. Step 2: Convert to fraction form
    280,936.57/387,717.80 = 160,116.79/x
  3. Step 3: Cross multiply
    280,936.57x = 387,717.80 × 160,116.79
  4. Step 4: Simplify right side
    280,936.57x = 62,080,129,561.86
  5. Step 5: Solve for x
    x = 62,080,129,561.86/280,936.57
  6. Step 6: Final answer
    x = 220,975.61

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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.