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Finding the Fourth Proportional to 347,238.80, 520,906.80 and 147,557.60

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Solution

The fourth proportional to 347,238.80, 520,906.80 and 147,557.60 is: 221,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,238.80 : 520,906.80 = 147,557.60 : x
  2. Step 2: Convert to fraction form
    347,238.80/520,906.80 = 147,557.60/x
  3. Step 3: Cross multiply
    347,238.80x = 520,906.80 × 147,557.60
  4. Step 4: Simplify right side
    347,238.80x = 76,863,757,231.68
  5. Step 5: Solve for x
    x = 76,863,757,231.68/347,238.80
  6. Step 6: Final answer
    x = 221,357.05

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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.