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Finding the Fourth Proportional to 144,288.70, 216,433.05 and 133,791.10

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Solution

The fourth proportional to 144,288.70, 216,433.05 and 133,791.10 is: 200,686.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,288.70 : 216,433.05 = 133,791.10 : x
  2. Step 2: Convert to fraction form
    144,288.70/216,433.05 = 133,791.10/x
  3. Step 3: Cross multiply
    144,288.70x = 216,433.05 × 133,791.10
  4. Step 4: Simplify right side
    144,288.70x = 28,956,815,835.86
  5. Step 5: Solve for x
    x = 28,956,815,835.86/144,288.70
  6. Step 6: Final answer
    x = 200,686.65

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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.