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Finding the Fourth Proportional to 638,481.43, 957,907.13 and 189,210.88

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Solution

The fourth proportional to 638,481.43, 957,907.13 and 189,210.88 is: 283,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,481.43 : 957,907.13 = 189,210.88 : x
  2. Step 2: Convert to fraction form
    638,481.43/957,907.13 = 189,210.88/x
  3. Step 3: Cross multiply
    638,481.43x = 957,907.13 × 189,210.88
  4. Step 4: Simplify right side
    638,481.43x = 181,246,447,684.75
  5. Step 5: Solve for x
    x = 181,246,447,684.75/638,481.43
  6. Step 6: Final answer
    x = 283,871.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.