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Finding the Fourth Proportional to 221,475.78, 331,980.39 and 110,434.50

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Solution

The fourth proportional to 221,475.78, 331,980.39 and 110,434.50 is: 165,535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,475.78 : 331,980.39 = 110,434.50 : x
  2. Step 2: Convert to fraction form
    221,475.78/331,980.39 = 110,434.50/x
  3. Step 3: Cross multiply
    221,475.78x = 331,980.39 × 110,434.50
  4. Step 4: Simplify right side
    221,475.78x = 36,662,088,379.46
  5. Step 5: Solve for x
    x = 36,662,088,379.46/221,475.78
  6. Step 6: Final answer
    x = 165,535.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.