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Finding the Fourth Proportional to 228,363.85, 315,135.59 and 126,393.49

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Solution

The fourth proportional to 228,363.85, 315,135.59 and 126,393.49 is: 174,419.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,363.85 : 315,135.59 = 126,393.49 : x
  2. Step 2: Convert to fraction form
    228,363.85/315,135.59 = 126,393.49/x
  3. Step 3: Cross multiply
    228,363.85x = 315,135.59 × 126,393.49
  4. Step 4: Simplify right side
    228,363.85x = 39,831,087,043.31
  5. Step 5: Solve for x
    x = 39,831,087,043.31/228,363.85
  6. Step 6: Final answer
    x = 174,419.41

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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.