Home / 217,569.31-326,129.45-91,282.88

Finding the Fourth Proportional to 217,569.31, 326,129.45 and 91,282.88

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Solution

The fourth proportional to 217,569.31, 326,129.45 and 91,282.88 is: 136,830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,569.31 : 326,129.45 = 91,282.88 : x
  2. Step 2: Convert to fraction form
    217,569.31/326,129.45 = 91,282.88/x
  3. Step 3: Cross multiply
    217,569.31x = 326,129.45 × 91,282.88
  4. Step 4: Simplify right side
    217,569.31x = 29,770,034,992.40
  5. Step 5: Solve for x
    x = 29,770,034,992.40/217,569.31
  6. Step 6: Final answer
    x = 136,830.12

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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.