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Finding the Fourth Proportional to 221,332.60, 331,602.90 and 134,620.60

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Solution

The fourth proportional to 221,332.60, 331,602.90 and 134,620.60 is: 201,690.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,332.60 : 331,602.90 = 134,620.60 : x
  2. Step 2: Convert to fraction form
    221,332.60/331,602.90 = 134,620.60/x
  3. Step 3: Cross multiply
    221,332.60x = 331,602.90 × 134,620.60
  4. Step 4: Simplify right side
    221,332.60x = 44,640,581,359.74
  5. Step 5: Solve for x
    x = 44,640,581,359.74/221,332.60
  6. Step 6: Final answer
    x = 201,690.04

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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.