Home / 521,817.23-781,987.72-221,995.93

Finding the Fourth Proportional to 521,817.23, 781,987.72 and 221,995.93

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Solution

The fourth proportional to 521,817.23, 781,987.72 and 221,995.93 is: 332,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,817.23 : 781,987.72 = 221,995.93 : x
  2. Step 2: Convert to fraction form
    521,817.23/781,987.72 = 221,995.93/x
  3. Step 3: Cross multiply
    521,817.23x = 781,987.72 × 221,995.93
  4. Step 4: Simplify right side
    521,817.23x = 173,598,091,149.98
  5. Step 5: Solve for x
    x = 173,598,091,149.98/521,817.23
  6. Step 6: Final answer
    x = 332,679.88

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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.