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Finding the Fourth Proportional to 203,464.80, 304,981.20 and 98,215.20

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Solution

The fourth proportional to 203,464.80, 304,981.20 and 98,215.20 is: 147,218.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,464.80 : 304,981.20 = 98,215.20 : x
  2. Step 2: Convert to fraction form
    203,464.80/304,981.20 = 98,215.20/x
  3. Step 3: Cross multiply
    203,464.80x = 304,981.20 × 98,215.20
  4. Step 4: Simplify right side
    203,464.80x = 29,953,789,554.24
  5. Step 5: Solve for x
    x = 29,953,789,554.24/203,464.80
  6. Step 6: Final answer
    x = 147,218.53

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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.