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Finding the Fourth Proportional to 345,452.60, 518,144.88 and 120,771.56

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Solution

The fourth proportional to 345,452.60, 518,144.88 and 120,771.56 is: 181,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,452.60 : 518,144.88 = 120,771.56 : x
  2. Step 2: Convert to fraction form
    345,452.60/518,144.88 = 120,771.56/x
  3. Step 3: Cross multiply
    345,452.60x = 518,144.88 × 120,771.56
  4. Step 4: Simplify right side
    345,452.60x = 62,577,165,463.61
  5. Step 5: Solve for x
    x = 62,577,165,463.61/345,452.60
  6. Step 6: Final answer
    x = 181,145.45

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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.