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Finding the Fourth Proportional to 207,859.65, 311,009.45 and 123,310.23

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Solution

The fourth proportional to 207,859.65, 311,009.45 and 123,310.23 is: 184,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,859.65 : 311,009.45 = 123,310.23 : x
  2. Step 2: Convert to fraction form
    207,859.65/311,009.45 = 123,310.23/x
  3. Step 3: Cross multiply
    207,859.65x = 311,009.45 × 123,310.23
  4. Step 4: Simplify right side
    207,859.65x = 38,350,646,195.12
  5. Step 5: Solve for x
    x = 38,350,646,195.12/207,859.65
  6. Step 6: Final answer
    x = 184,502.60

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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.