Home / 389,886.06-537,982.11-220,116.54

Finding the Fourth Proportional to 389,886.06, 537,982.11 and 220,116.54

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Solution

The fourth proportional to 389,886.06, 537,982.11 and 220,116.54 is: 303,726.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,886.06 : 537,982.11 = 220,116.54 : x
  2. Step 2: Convert to fraction form
    389,886.06/537,982.11 = 220,116.54/x
  3. Step 3: Cross multiply
    389,886.06x = 537,982.11 × 220,116.54
  4. Step 4: Simplify right side
    389,886.06x = 118,418,760,635.10
  5. Step 5: Solve for x
    x = 118,418,760,635.10/389,886.06
  6. Step 6: Final answer
    x = 303,726.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.