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Finding the Fourth Proportional to 228,331.80, 315,097.44 and 127,729.80

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Solution

The fourth proportional to 228,331.80, 315,097.44 and 127,729.80 is: 176,266.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,331.80 : 315,097.44 = 127,729.80 : x
  2. Step 2: Convert to fraction form
    228,331.80/315,097.44 = 127,729.80/x
  3. Step 3: Cross multiply
    228,331.80x = 315,097.44 × 127,729.80
  4. Step 4: Simplify right side
    228,331.80x = 40,247,332,991.71
  5. Step 5: Solve for x
    x = 40,247,332,991.71/228,331.80
  6. Step 6: Final answer
    x = 176,266.88

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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.