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Finding the Fourth Proportional to 323,573.28, 485,361 and 98,932.86

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Solution

The fourth proportional to 323,573.28, 485,361 and 98,932.86 is: 148,399.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,573.28 : 485,361 = 98,932.86 : x
  2. Step 2: Convert to fraction form
    323,573.28/485,361 = 98,932.86/x
  3. Step 3: Cross multiply
    323,573.28x = 485,361 × 98,932.86
  4. Step 4: Simplify right side
    323,573.28x = 48,018,151,862.46
  5. Step 5: Solve for x
    x = 48,018,151,862.46/323,573.28
  6. Step 6: Final answer
    x = 148,399.62

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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.