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Finding the Fourth Proportional to 365,005.20, 547,507.78 and 115,687.20

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Solution

The fourth proportional to 365,005.20, 547,507.78 and 115,687.20 is: 173,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,005.20 : 547,507.78 = 115,687.20 : x
  2. Step 2: Convert to fraction form
    365,005.20/547,507.78 = 115,687.20/x
  3. Step 3: Cross multiply
    365,005.20x = 547,507.78 × 115,687.20
  4. Step 4: Simplify right side
    365,005.20x = 63,339,642,046.42
  5. Step 5: Solve for x
    x = 63,339,642,046.42/365,005.20
  6. Step 6: Final answer
    x = 173,530.79

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1.5x scale

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.