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Finding the Fourth Proportional to 323,728.65, 485,648.46 and 99,083.52

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Solution

The fourth proportional to 323,728.65, 485,648.46 and 99,083.52 is: 148,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,728.65 : 485,648.46 = 99,083.52 : x
  2. Step 2: Convert to fraction form
    323,728.65/485,648.46 = 99,083.52/x
  3. Step 3: Cross multiply
    323,728.65x = 485,648.46 × 99,083.52
  4. Step 4: Simplify right side
    323,728.65x = 48,119,758,899.38
  5. Step 5: Solve for x
    x = 48,119,758,899.38/323,728.65
  6. Step 6: Final answer
    x = 148,642.26

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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.