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Finding the Fourth Proportional to 235,967.22, 325,624.78 and 128,538.13

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Solution

The fourth proportional to 235,967.22, 325,624.78 and 128,538.13 is: 177,377.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,967.22 : 325,624.78 = 128,538.13 : x
  2. Step 2: Convert to fraction form
    235,967.22/325,624.78 = 128,538.13/x
  3. Step 3: Cross multiply
    235,967.22x = 325,624.78 × 128,538.13
  4. Step 4: Simplify right side
    235,967.22x = 41,855,200,302.86
  5. Step 5: Solve for x
    x = 41,855,200,302.86/235,967.22
  6. Step 6: Final answer
    x = 177,377.18

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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.