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Finding the Fourth Proportional to 498,556.04, 747,768.44 and 138,750.80

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Solution

The fourth proportional to 498,556.04, 747,768.44 and 138,750.80 is: 208,107.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,556.04 : 747,768.44 = 138,750.80 : x
  2. Step 2: Convert to fraction form
    498,556.04/747,768.44 = 138,750.80/x
  3. Step 3: Cross multiply
    498,556.04x = 747,768.44 × 138,750.80
  4. Step 4: Simplify right side
    498,556.04x = 103,753,465,872.79
  5. Step 5: Solve for x
    x = 103,753,465,872.79/498,556.04
  6. Step 6: Final answer
    x = 208,107.93

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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.