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Finding the Fourth Proportional to 342,131.10, 513,048.14 and 131,621.28

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Solution

The fourth proportional to 342,131.10, 513,048.14 and 131,621.28 is: 197,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,131.10 : 513,048.14 = 131,621.28 : x
  2. Step 2: Convert to fraction form
    342,131.10/513,048.14 = 131,621.28/x
  3. Step 3: Cross multiply
    342,131.10x = 513,048.14 × 131,621.28
  4. Step 4: Simplify right side
    342,131.10x = 67,528,052,888.42
  5. Step 5: Solve for x
    x = 67,528,052,888.42/342,131.10
  6. Step 6: Final answer
    x = 197,374.79

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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.