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Finding the Fourth Proportional to 638,328.54, 957,525.62 and 165,018

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Solution

The fourth proportional to 638,328.54, 957,525.62 and 165,018 is: 247,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,328.54 : 957,525.62 = 165,018 : x
  2. Step 2: Convert to fraction form
    638,328.54/957,525.62 = 165,018/x
  3. Step 3: Cross multiply
    638,328.54x = 957,525.62 × 165,018
  4. Step 4: Simplify right side
    638,328.54x = 158,008,961,936.07
  5. Step 5: Solve for x
    x = 158,008,961,936.07/638,328.54
  6. Step 6: Final answer
    x = 247,535.48

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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.