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Finding the Fourth Proportional to 638,409.90, 957,536.82 and 165,055.62

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Solution

The fourth proportional to 638,409.90, 957,536.82 and 165,055.62 is: 247,563.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,409.90 : 957,536.82 = 165,055.62 : x
  2. Step 2: Convert to fraction form
    638,409.90/957,536.82 = 165,055.62/x
  3. Step 3: Cross multiply
    638,409.90x = 957,536.82 × 165,055.62
  4. Step 4: Simplify right side
    638,409.90x = 158,046,833,497.93
  5. Step 5: Solve for x
    x = 158,046,833,497.93/638,409.90
  6. Step 6: Final answer
    x = 247,563.26

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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.