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Finding the Fourth Proportional to 203,949.72, 305,967.92 and 85,552.83

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Solution

The fourth proportional to 203,949.72, 305,967.92 and 85,552.83 is: 128,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,949.72 : 305,967.92 = 85,552.83 : x
  2. Step 2: Convert to fraction form
    203,949.72/305,967.92 = 85,552.83/x
  3. Step 3: Cross multiply
    203,949.72x = 305,967.92 × 85,552.83
  4. Step 4: Simplify right side
    203,949.72x = 26,176,421,017.45
  5. Step 5: Solve for x
    x = 26,176,421,017.45/203,949.72
  6. Step 6: Final answer
    x = 128,347.42

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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.