Home / 218,615.20-328,018.10-76,562.38

Finding the Fourth Proportional to 218,615.20, 328,018.10 and 76,562.38

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Solution

The fourth proportional to 218,615.20, 328,018.10 and 76,562.38 is: 114,876.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,615.20 : 328,018.10 = 76,562.38 : x
  2. Step 2: Convert to fraction form
    218,615.20/328,018.10 = 76,562.38/x
  3. Step 3: Cross multiply
    218,615.20x = 328,018.10 × 76,562.38
  4. Step 4: Simplify right side
    218,615.20x = 25,113,844,396.18
  5. Step 5: Solve for x
    x = 25,113,844,396.18/218,615.20
  6. Step 6: Final answer
    x = 114,876.94

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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.