Home / 814,065.18-1,221,156.08-215,020.36

Finding the Fourth Proportional to 814,065.18, 1,221,156.08 and 215,020.36

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Solution

The fourth proportional to 814,065.18, 1,221,156.08 and 215,020.36 is: 322,545.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,065.18 : 1,221,156.08 = 215,020.36 : x
  2. Step 2: Convert to fraction form
    814,065.18/1,221,156.08 = 215,020.36/x
  3. Step 3: Cross multiply
    814,065.18x = 1,221,156.08 × 215,020.36
  4. Step 4: Simplify right side
    814,065.18x = 262,573,419,937.79
  5. Step 5: Solve for x
    x = 262,573,419,937.79/814,065.18
  6. Step 6: Final answer
    x = 322,545.94

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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.