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Finding the Fourth Proportional to 243,611.20, 365,125.20 and 125,221.60

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Solution

The fourth proportional to 243,611.20, 365,125.20 and 125,221.60 is: 187,682.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,611.20 : 365,125.20 = 125,221.60 : x
  2. Step 2: Convert to fraction form
    243,611.20/365,125.20 = 125,221.60/x
  3. Step 3: Cross multiply
    243,611.20x = 365,125.20 × 125,221.60
  4. Step 4: Simplify right side
    243,611.20x = 45,721,561,744.32
  5. Step 5: Solve for x
    x = 45,721,561,744.32/243,611.20
  6. Step 6: Final answer
    x = 187,682.51

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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.