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Finding the Fourth Proportional to 310,257.27, 428,154.80 and 176,121.27

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Solution

The fourth proportional to 310,257.27, 428,154.80 and 176,121.27 is: 243,047.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,257.27 : 428,154.80 = 176,121.27 : x
  2. Step 2: Convert to fraction form
    310,257.27/428,154.80 = 176,121.27/x
  3. Step 3: Cross multiply
    310,257.27x = 428,154.80 × 176,121.27
  4. Step 4: Simplify right side
    310,257.27x = 75,407,166,251.99
  5. Step 5: Solve for x
    x = 75,407,166,251.99/310,257.27
  6. Step 6: Final answer
    x = 243,047.22

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1.5x scale

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.