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Finding the Fourth Proportional to 203,487.95, 305,145.52 and 98,339.15

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Solution

The fourth proportional to 203,487.95, 305,145.52 and 98,339.15 is: 147,466.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,487.95 : 305,145.52 = 98,339.15 : x
  2. Step 2: Convert to fraction form
    203,487.95/305,145.52 = 98,339.15/x
  3. Step 3: Cross multiply
    203,487.95x = 305,145.52 × 98,339.15
  4. Step 4: Simplify right side
    203,487.95x = 30,007,751,063.11
  5. Step 5: Solve for x
    x = 30,007,751,063.11/203,487.95
  6. Step 6: Final answer
    x = 147,466.97

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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.