Home / 389,812.28-537,930.06-220,062.20

Finding the Fourth Proportional to 389,812.28, 537,930.06 and 220,062.20

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Solution

The fourth proportional to 389,812.28, 537,930.06 and 220,062.20 is: 303,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,812.28 : 537,930.06 = 220,062.20 : x
  2. Step 2: Convert to fraction form
    389,812.28/537,930.06 = 220,062.20/x
  3. Step 3: Cross multiply
    389,812.28x = 537,930.06 × 220,062.20
  4. Step 4: Simplify right side
    389,812.28x = 118,378,072,449.73
  5. Step 5: Solve for x
    x = 118,378,072,449.73/389,812.28
  6. Step 6: Final answer
    x = 303,679.69

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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.