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Finding the Fourth Proportional to 203,502.80, 305,038.20 and 98,253.20

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Solution

The fourth proportional to 203,502.80, 305,038.20 and 98,253.20 is: 147,275.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,502.80 : 305,038.20 = 98,253.20 : x
  2. Step 2: Convert to fraction form
    203,502.80/305,038.20 = 98,253.20/x
  3. Step 3: Cross multiply
    203,502.80x = 305,038.20 × 98,253.20
  4. Step 4: Simplify right side
    203,502.80x = 29,970,979,272.24
  5. Step 5: Solve for x
    x = 29,970,979,272.24/203,502.80
  6. Step 6: Final answer
    x = 147,275.51

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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.