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Finding the Fourth Proportional to 548,367.32, 756,741.68 and 306,647.12

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Solution

The fourth proportional to 548,367.32, 756,741.68 and 306,647.12 is: 423,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,367.32 : 756,741.68 = 306,647.12 : x
  2. Step 2: Convert to fraction form
    548,367.32/756,741.68 = 306,647.12/x
  3. Step 3: Cross multiply
    548,367.32x = 756,741.68 × 306,647.12
  4. Step 4: Simplify right side
    548,367.32x = 232,052,656,755.96
  5. Step 5: Solve for x
    x = 232,052,656,755.96/548,367.32
  6. Step 6: Final answer
    x = 423,170.11

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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.