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Finding the Fourth Proportional to 228,959.46, 315,959.35 and 126,968.47

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Solution

The fourth proportional to 228,959.46, 315,959.35 and 126,968.47 is: 175,213.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,959.46 : 315,959.35 = 126,968.47 : x
  2. Step 2: Convert to fraction form
    228,959.46/315,959.35 = 126,968.47/x
  3. Step 3: Cross multiply
    228,959.46x = 315,959.35 × 126,968.47
  4. Step 4: Simplify right side
    228,959.46x = 40,116,875,251.69
  5. Step 5: Solve for x
    x = 40,116,875,251.69/228,959.46
  6. Step 6: Final answer
    x = 175,213.88

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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.