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Finding the Fourth Proportional to 228,476.19, 315,308.80 and 126,512.94

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Solution

The fourth proportional to 228,476.19, 315,308.80 and 126,512.94 is: 174,594.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,476.19 : 315,308.80 = 126,512.94 : x
  2. Step 2: Convert to fraction form
    228,476.19/315,308.80 = 126,512.94/x
  3. Step 3: Cross multiply
    228,476.19x = 315,308.80 × 126,512.94
  4. Step 4: Simplify right side
    228,476.19x = 39,890,642,862.81
  5. Step 5: Solve for x
    x = 39,890,642,862.81/228,476.19
  6. Step 6: Final answer
    x = 174,594.31

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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.