Home / 251,922.71-347,640.50-138,723.59

Finding the Fourth Proportional to 251,922.71, 347,640.50 and 138,723.59

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Solution

The fourth proportional to 251,922.71, 347,640.50 and 138,723.59 is: 191,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,922.71 : 347,640.50 = 138,723.59 : x
  2. Step 2: Convert to fraction form
    251,922.71/347,640.50 = 138,723.59/x
  3. Step 3: Cross multiply
    251,922.71x = 347,640.50 × 138,723.59
  4. Step 4: Simplify right side
    251,922.71x = 48,225,935,757.57
  5. Step 5: Solve for x
    x = 48,225,935,757.57/251,922.71
  6. Step 6: Final answer
    x = 191,431.48

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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.