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Finding the Fourth Proportional to 145,187.70, 217,809.09 and 50,414.19

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Solution

The fourth proportional to 145,187.70, 217,809.09 and 50,414.19 is: 75,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,187.70 : 217,809.09 = 50,414.19 : x
  2. Step 2: Convert to fraction form
    145,187.70/217,809.09 = 50,414.19/x
  3. Step 3: Cross multiply
    145,187.70x = 217,809.09 × 50,414.19
  4. Step 4: Simplify right side
    145,187.70x = 10,980,668,846.99
  5. Step 5: Solve for x
    x = 10,980,668,846.99/145,187.70
  6. Step 6: Final answer
    x = 75,630.85

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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.