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Finding the Fourth Proportional to 228,691.38, 315,567.95 and 126,691.37

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Solution

The fourth proportional to 228,691.38, 315,567.95 and 126,691.37 is: 174,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,691.38 : 315,567.95 = 126,691.37 : x
  2. Step 2: Convert to fraction form
    228,691.38/315,567.95 = 126,691.37/x
  3. Step 3: Cross multiply
    228,691.38x = 315,567.95 × 126,691.37
  4. Step 4: Simplify right side
    228,691.38x = 39,979,736,069.05
  5. Step 5: Solve for x
    x = 39,979,736,069.05/228,691.38
  6. Step 6: Final answer
    x = 174,819.60

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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.