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Finding the Fourth Proportional to 228,446.48, 315,256.56 and 126,479

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Solution

The fourth proportional to 228,446.48, 315,256.56 and 126,479 is: 174,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,446.48 : 315,256.56 = 126,479 : x
  2. Step 2: Convert to fraction form
    228,446.48/315,256.56 = 126,479/x
  3. Step 3: Cross multiply
    228,446.48x = 315,256.56 × 126,479
  4. Step 4: Simplify right side
    228,446.48x = 39,873,334,452.24
  5. Step 5: Solve for x
    x = 39,873,334,452.24/228,446.48
  6. Step 6: Final answer
    x = 174,541.25

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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.