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Finding the Fourth Proportional to 203,417.92, 305,140.32 and 70,311.04

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Solution

The fourth proportional to 203,417.92, 305,140.32 and 70,311.04 is: 105,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,417.92 : 305,140.32 = 70,311.04 : x
  2. Step 2: Convert to fraction form
    203,417.92/305,140.32 = 70,311.04/x
  3. Step 3: Cross multiply
    203,417.92x = 305,140.32 × 70,311.04
  4. Step 4: Simplify right side
    203,417.92x = 21,454,733,245.13
  5. Step 5: Solve for x
    x = 21,454,733,245.13/203,417.92
  6. Step 6: Final answer
    x = 105,471.21

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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.