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Finding the Fourth Proportional to 215,640.50, 297,585.90 and 118,847.81

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Solution

The fourth proportional to 215,640.50, 297,585.90 and 118,847.81 is: 164,011.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,640.50 : 297,585.90 = 118,847.81 : x
  2. Step 2: Convert to fraction form
    215,640.50/297,585.90 = 118,847.81/x
  3. Step 3: Cross multiply
    215,640.50x = 297,585.90 × 118,847.81
  4. Step 4: Simplify right side
    215,640.50x = 35,367,431,571.92
  5. Step 5: Solve for x
    x = 35,367,431,571.92/215,640.50
  6. Step 6: Final answer
    x = 164,011.08

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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.