Home / 217,749.28-326,053.68-142,633.12

Finding the Fourth Proportional to 217,749.28, 326,053.68 and 142,633.12

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Solution

The fourth proportional to 217,749.28, 326,053.68 and 142,633.12 is: 213,576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,749.28 : 326,053.68 = 142,633.12 : x
  2. Step 2: Convert to fraction form
    217,749.28/326,053.68 = 142,633.12/x
  3. Step 3: Cross multiply
    217,749.28x = 326,053.68 × 142,633.12
  4. Step 4: Simplify right side
    217,749.28x = 46,506,053,665.88
  5. Step 5: Solve for x
    x = 46,506,053,665.88/217,749.28
  6. Step 6: Final answer
    x = 213,576.15

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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.