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Finding the Fourth Proportional to 638,408.40, 957,534.57 and 165,054.12

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Solution

The fourth proportional to 638,408.40, 957,534.57 and 165,054.12 is: 247,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,408.40 : 957,534.57 = 165,054.12 : x
  2. Step 2: Convert to fraction form
    638,408.40/957,534.57 = 165,054.12/x
  3. Step 3: Cross multiply
    638,408.40x = 957,534.57 × 165,054.12
  4. Step 4: Simplify right side
    638,408.40x = 158,045,025,820.93
  5. Step 5: Solve for x
    x = 158,045,025,820.93/638,408.40
  6. Step 6: Final answer
    x = 247,561.01

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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.