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Finding the Fourth Proportional to 203,707.60, 305,439.90 and 124,878.40

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Solution

The fourth proportional to 203,707.60, 305,439.90 and 124,878.40 is: 187,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,707.60 : 305,439.90 = 124,878.40 : x
  2. Step 2: Convert to fraction form
    203,707.60/305,439.90 = 124,878.40/x
  3. Step 3: Cross multiply
    203,707.60x = 305,439.90 × 124,878.40
  4. Step 4: Simplify right side
    203,707.60x = 38,142,846,008.16
  5. Step 5: Solve for x
    x = 38,142,846,008.16/203,707.60
  6. Step 6: Final answer
    x = 187,243.12

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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.