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Finding the Fourth Proportional to 342,408.60, 513,574.02 and 132,028.92

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Solution

The fourth proportional to 342,408.60, 513,574.02 and 132,028.92 is: 198,028.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,408.60 : 513,574.02 = 132,028.92 : x
  2. Step 2: Convert to fraction form
    342,408.60/513,574.02 = 132,028.92/x
  3. Step 3: Cross multiply
    342,408.60x = 513,574.02 × 132,028.92
  4. Step 4: Simplify right side
    342,408.60x = 67,806,623,200.66
  5. Step 5: Solve for x
    x = 67,806,623,200.66/342,408.60
  6. Step 6: Final answer
    x = 198,028.39

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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.