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Finding the Fourth Proportional to 250,645.12, 345,887.76 and 137,469.76

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Solution

The fourth proportional to 250,645.12, 345,887.76 and 137,469.76 is: 189,706.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,645.12 : 345,887.76 = 137,469.76 : x
  2. Step 2: Convert to fraction form
    250,645.12/345,887.76 = 137,469.76/x
  3. Step 3: Cross multiply
    250,645.12x = 345,887.76 × 137,469.76
  4. Step 4: Simplify right side
    250,645.12x = 47,549,107,354.14
  5. Step 5: Solve for x
    x = 47,549,107,354.14/250,645.12
  6. Step 6: Final answer
    x = 189,706.89

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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.