Home / 217,091.28-325,641.24-142,685.76

Finding the Fourth Proportional to 217,091.28, 325,641.24 and 142,685.76

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Solution

The fourth proportional to 217,091.28, 325,641.24 and 142,685.76 is: 214,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,091.28 : 325,641.24 = 142,685.76 : x
  2. Step 2: Convert to fraction form
    217,091.28/325,641.24 = 142,685.76/x
  3. Step 3: Cross multiply
    217,091.28x = 325,641.24 × 142,685.76
  4. Step 4: Simplify right side
    217,091.28x = 46,464,367,816.74
  5. Step 5: Solve for x
    x = 46,464,367,816.74/217,091.28
  6. Step 6: Final answer
    x = 214,031.48

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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.