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Finding the Fourth Proportional to 404,272.40, 606,437.40 and 123,789.20

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Solution

The fourth proportional to 404,272.40, 606,437.40 and 123,789.20 is: 185,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,272.40 : 606,437.40 = 123,789.20 : x
  2. Step 2: Convert to fraction form
    404,272.40/606,437.40 = 123,789.20/x
  3. Step 3: Cross multiply
    404,272.40x = 606,437.40 × 123,789.20
  4. Step 4: Simplify right side
    404,272.40x = 75,070,400,596.08
  5. Step 5: Solve for x
    x = 75,070,400,596.08/404,272.40
  6. Step 6: Final answer
    x = 185,692.62

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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.