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Finding the Fourth Proportional to 342,138.36, 513,228.54 and 131,776.92

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Solution

The fourth proportional to 342,138.36, 513,228.54 and 131,776.92 is: 197,673.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,138.36 : 513,228.54 = 131,776.92 : x
  2. Step 2: Convert to fraction form
    342,138.36/513,228.54 = 131,776.92/x
  3. Step 3: Cross multiply
    342,138.36x = 513,228.54 × 131,776.92
  4. Step 4: Simplify right side
    342,138.36x = 67,631,676,257.30
  5. Step 5: Solve for x
    x = 67,631,676,257.30/342,138.36
  6. Step 6: Final answer
    x = 197,673.47

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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.