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Finding the Fourth Proportional to 338,301.40, 506,139.90 and 220,203.40

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Solution

The fourth proportional to 338,301.40, 506,139.90 and 220,203.40 is: 329,450.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,301.40 : 506,139.90 = 220,203.40 : x
  2. Step 2: Convert to fraction form
    338,301.40/506,139.90 = 220,203.40/x
  3. Step 3: Cross multiply
    338,301.40x = 506,139.90 × 220,203.40
  4. Step 4: Simplify right side
    338,301.40x = 111,453,726,855.66
  5. Step 5: Solve for x
    x = 111,453,726,855.66/338,301.40
  6. Step 6: Final answer
    x = 329,450.98

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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.