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Finding the Fourth Proportional to 250,113.50, 345,189.57 and 142,658.90

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Solution

The fourth proportional to 250,113.50, 345,189.57 and 142,658.90 is: 196,888.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,113.50 : 345,189.57 = 142,658.90 : x
  2. Step 2: Convert to fraction form
    250,113.50/345,189.57 = 142,658.90/x
  3. Step 3: Cross multiply
    250,113.50x = 345,189.57 × 142,658.90
  4. Step 4: Simplify right side
    250,113.50x = 49,244,364,347.67
  5. Step 5: Solve for x
    x = 49,244,364,347.67/250,113.50
  6. Step 6: Final answer
    x = 196,888.07

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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.