Home / 218,722.20-328,083.30-52,510.20

Finding the Fourth Proportional to 218,722.20, 328,083.30 and 52,510.20

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Solution

The fourth proportional to 218,722.20, 328,083.30 and 52,510.20 is: 78,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,722.20 : 328,083.30 = 52,510.20 : x
  2. Step 2: Convert to fraction form
    218,722.20/328,083.30 = 52,510.20/x
  3. Step 3: Cross multiply
    218,722.20x = 328,083.30 × 52,510.20
  4. Step 4: Simplify right side
    218,722.20x = 17,227,719,699.66
  5. Step 5: Solve for x
    x = 17,227,719,699.66/218,722.20
  6. Step 6: Final answer
    x = 78,765.30

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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.