Home / 219,723.40-329,565.90-71,979.40

Finding the Fourth Proportional to 219,723.40, 329,565.90 and 71,979.40

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Solution

The fourth proportional to 219,723.40, 329,565.90 and 71,979.40 is: 107,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,723.40 : 329,565.90 = 71,979.40 : x
  2. Step 2: Convert to fraction form
    219,723.40/329,565.90 = 71,979.40/x
  3. Step 3: Cross multiply
    219,723.40x = 329,565.90 × 71,979.40
  4. Step 4: Simplify right side
    219,723.40x = 23,721,955,742.46
  5. Step 5: Solve for x
    x = 23,721,955,742.46/219,723.40
  6. Step 6: Final answer
    x = 107,962.81

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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.