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Finding the Fourth Proportional to 228,869.92, 315,840.30 and 126,895

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Solution

The fourth proportional to 228,869.92, 315,840.30 and 126,895 is: 175,114.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,869.92 : 315,840.30 = 126,895 : x
  2. Step 2: Convert to fraction form
    228,869.92/315,840.30 = 126,895/x
  3. Step 3: Cross multiply
    228,869.92x = 315,840.30 × 126,895
  4. Step 4: Simplify right side
    228,869.92x = 40,078,554,868.50
  5. Step 5: Solve for x
    x = 40,078,554,868.50/228,869.92
  6. Step 6: Final answer
    x = 175,114.99

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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.