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Finding the Fourth Proportional to 303,158.66, 418,287.02 and 172,326.05

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Solution

The fourth proportional to 303,158.66, 418,287.02 and 172,326.05 is: 237,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,158.66 : 418,287.02 = 172,326.05 : x
  2. Step 2: Convert to fraction form
    303,158.66/418,287.02 = 172,326.05/x
  3. Step 3: Cross multiply
    303,158.66x = 418,287.02 × 172,326.05
  4. Step 4: Simplify right side
    303,158.66x = 72,081,747,831.44
  5. Step 5: Solve for x
    x = 72,081,747,831.44/303,158.66
  6. Step 6: Final answer
    x = 237,769.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.