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Finding the Fourth Proportional to 235,826.31, 325,475.22 and 139,047.91

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Solution

The fourth proportional to 235,826.31, 325,475.22 and 139,047.91 is: 191,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,826.31 : 325,475.22 = 139,047.91 : x
  2. Step 2: Convert to fraction form
    235,826.31/325,475.22 = 139,047.91/x
  3. Step 3: Cross multiply
    235,826.31x = 325,475.22 × 139,047.91
  4. Step 4: Simplify right side
    235,826.31x = 45,256,649,097.79
  5. Step 5: Solve for x
    x = 45,256,649,097.79/235,826.31
  6. Step 6: Final answer
    x = 191,906.70

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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.