Home / 521,818.23-781,989.22-221,996.93

Finding the Fourth Proportional to 521,818.23, 781,989.22 and 221,996.93

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Solution

The fourth proportional to 521,818.23, 781,989.22 and 221,996.93 is: 332,681.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,818.23 : 781,989.22 = 221,996.93 : x
  2. Step 2: Convert to fraction form
    521,818.23/781,989.22 = 221,996.93/x
  3. Step 3: Cross multiply
    521,818.23x = 781,989.22 × 221,996.93
  4. Step 4: Simplify right side
    521,818.23x = 173,599,206,133.10
  5. Step 5: Solve for x
    x = 173,599,206,133.10/521,818.23
  6. Step 6: Final answer
    x = 332,681.37

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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.