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Finding the Fourth Proportional to 327,979, 492,007.91 and 310,042.87

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Solution

The fourth proportional to 327,979, 492,007.91 and 310,042.87 is: 465,101.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,979 : 492,007.91 = 310,042.87 : x
  2. Step 2: Convert to fraction form
    327,979/492,007.91 = 310,042.87/x
  3. Step 3: Cross multiply
    327,979x = 492,007.91 × 310,042.87
  4. Step 4: Simplify right side
    327,979x = 152,543,544,479.10
  5. Step 5: Solve for x
    x = 152,543,544,479.10/327,979
  6. Step 6: Final answer
    x = 465,101.56

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1.5x scale

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.