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Finding the Fourth Proportional to 207,243.16, 310,864.86 and 82,671.64

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Solution

The fourth proportional to 207,243.16, 310,864.86 and 82,671.64 is: 124,007.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,243.16 : 310,864.86 = 82,671.64 : x
  2. Step 2: Convert to fraction form
    207,243.16/310,864.86 = 82,671.64/x
  3. Step 3: Cross multiply
    207,243.16x = 310,864.86 × 82,671.64
  4. Step 4: Simplify right side
    207,243.16x = 25,699,707,794.57
  5. Step 5: Solve for x
    x = 25,699,707,794.57/207,243.16
  6. Step 6: Final answer
    x = 124,007.51

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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.