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Finding the Fourth Proportional to 228,871.71, 315,830.30 and 126,891.23

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Solution

The fourth proportional to 228,871.71, 315,830.30 and 126,891.23 is: 175,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,871.71 : 315,830.30 = 126,891.23 : x
  2. Step 2: Convert to fraction form
    228,871.71/315,830.30 = 126,891.23/x
  3. Step 3: Cross multiply
    228,871.71x = 315,830.30 × 126,891.23
  4. Step 4: Simplify right side
    228,871.71x = 40,076,093,024.66
  5. Step 5: Solve for x
    x = 40,076,093,024.66/228,871.71
  6. Step 6: Final answer
    x = 175,102.87

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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.