Home / 217,591.57-326,162.80-91,305.15

Finding the Fourth Proportional to 217,591.57, 326,162.80 and 91,305.15

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Solution

The fourth proportional to 217,591.57, 326,162.80 and 91,305.15 is: 136,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,591.57 : 326,162.80 = 91,305.15 : x
  2. Step 2: Convert to fraction form
    217,591.57/326,162.80 = 91,305.15/x
  3. Step 3: Cross multiply
    217,591.57x = 326,162.80 × 91,305.15
  4. Step 4: Simplify right side
    217,591.57x = 29,780,343,378.42
  5. Step 5: Solve for x
    x = 29,780,343,378.42/217,591.57
  6. Step 6: Final answer
    x = 136,863.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.