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Finding the Fourth Proportional to 228,366.28, 315,141.06 and 126,391.74

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Solution

The fourth proportional to 228,366.28, 315,141.06 and 126,391.74 is: 174,418.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,366.28 : 315,141.06 = 126,391.74 : x
  2. Step 2: Convert to fraction form
    228,366.28/315,141.06 = 126,391.74/x
  3. Step 3: Cross multiply
    228,366.28x = 315,141.06 × 126,391.74
  4. Step 4: Simplify right side
    228,366.28x = 39,831,226,918.84
  5. Step 5: Solve for x
    x = 39,831,226,918.84/228,366.28
  6. Step 6: Final answer
    x = 174,418.16

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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.