Home / 251,917.83-347,633.78-138,718.71

Finding the Fourth Proportional to 251,917.83, 347,633.78 and 138,718.71

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Solution

The fourth proportional to 251,917.83, 347,633.78 and 138,718.71 is: 191,424.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,917.83 : 347,633.78 = 138,718.71 : x
  2. Step 2: Convert to fraction form
    251,917.83/347,633.78 = 138,718.71/x
  3. Step 3: Cross multiply
    251,917.83x = 347,633.78 × 138,718.71
  4. Step 4: Simplify right side
    251,917.83x = 48,223,308,820.43
  5. Step 5: Solve for x
    x = 48,223,308,820.43/251,917.83
  6. Step 6: Final answer
    x = 191,424.75

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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.