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Finding the Fourth Proportional to 228,372.48, 315,154.80 and 127,764

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Solution

The fourth proportional to 228,372.48, 315,154.80 and 127,764 is: 176,314.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,372.48 : 315,154.80 = 127,764 : x
  2. Step 2: Convert to fraction form
    228,372.48/315,154.80 = 127,764/x
  3. Step 3: Cross multiply
    228,372.48x = 315,154.80 × 127,764
  4. Step 4: Simplify right side
    228,372.48x = 40,265,437,867.20
  5. Step 5: Solve for x
    x = 40,265,437,867.20/228,372.48
  6. Step 6: Final answer
    x = 176,314.76

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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.