Home / 217,581.80-326,148.16-91,295.40

Finding the Fourth Proportional to 217,581.80, 326,148.16 and 91,295.40

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Solution

The fourth proportional to 217,581.80, 326,148.16 and 91,295.40 is: 136,848.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,581.80 : 326,148.16 = 91,295.40 : x
  2. Step 2: Convert to fraction form
    217,581.80/326,148.16 = 91,295.40/x
  3. Step 3: Cross multiply
    217,581.80x = 326,148.16 × 91,295.40
  4. Step 4: Simplify right side
    217,581.80x = 29,775,826,726.46
  5. Step 5: Solve for x
    x = 29,775,826,726.46/217,581.80
  6. Step 6: Final answer
    x = 136,848.89

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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.