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Finding the Fourth Proportional to 286,324.48, 428,832.67 and 136,670.12

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Solution

The fourth proportional to 286,324.48, 428,832.67 and 136,670.12 is: 204,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,324.48 : 428,832.67 = 136,670.12 : x
  2. Step 2: Convert to fraction form
    286,324.48/428,832.67 = 136,670.12/x
  3. Step 3: Cross multiply
    286,324.48x = 428,832.67 × 136,670.12
  4. Step 4: Simplify right side
    286,324.48x = 58,608,612,468.82
  5. Step 5: Solve for x
    x = 58,608,612,468.82/286,324.48
  6. Step 6: Final answer
    x = 204,692.98

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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.