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Finding the Fourth Proportional to 323,616.65, 485,347.12 and 98,979.03

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Solution

The fourth proportional to 323,616.65, 485,347.12 and 98,979.03 is: 148,444.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,616.65 : 485,347.12 = 98,979.03 : x
  2. Step 2: Convert to fraction form
    323,616.65/485,347.12 = 98,979.03/x
  3. Step 3: Cross multiply
    323,616.65x = 485,347.12 × 98,979.03
  4. Step 4: Simplify right side
    323,616.65x = 48,039,186,903.45
  5. Step 5: Solve for x
    x = 48,039,186,903.45/323,616.65
  6. Step 6: Final answer
    x = 148,444.73

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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.