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Finding the Fourth Proportional to 228,595.50, 315,471.51 and 133,086.78

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Solution

The fourth proportional to 228,595.50, 315,471.51 and 133,086.78 is: 183,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,595.50 : 315,471.51 = 133,086.78 : x
  2. Step 2: Convert to fraction form
    228,595.50/315,471.51 = 133,086.78/x
  3. Step 3: Cross multiply
    228,595.50x = 315,471.51 × 133,086.78
  4. Step 4: Simplify right side
    228,595.50x = 41,985,087,447.64
  5. Step 5: Solve for x
    x = 41,985,087,447.64/228,595.50
  6. Step 6: Final answer
    x = 183,665.42

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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.