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Finding the Fourth Proportional to 342,237.45, 513,391.39 and 129,184.82

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Solution

The fourth proportional to 342,237.45, 513,391.39 and 129,184.82 is: 193,790.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,237.45 : 513,391.39 = 129,184.82 : x
  2. Step 2: Convert to fraction form
    342,237.45/513,391.39 = 129,184.82/x
  3. Step 3: Cross multiply
    342,237.45x = 513,391.39 × 129,184.82
  4. Step 4: Simplify right side
    342,237.45x = 66,322,374,306.70
  5. Step 5: Solve for x
    x = 66,322,374,306.70/342,237.45
  6. Step 6: Final answer
    x = 193,790.52

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1.5x scale

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.