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Finding the Fourth Proportional to 310,732.01, 428,745.79 and 181,645.42

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Solution

The fourth proportional to 310,732.01, 428,745.79 and 181,645.42 is: 250,633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,732.01 : 428,745.79 = 181,645.42 : x
  2. Step 2: Convert to fraction form
    310,732.01/428,745.79 = 181,645.42/x
  3. Step 3: Cross multiply
    310,732.01x = 428,745.79 × 181,645.42
  4. Step 4: Simplify right side
    310,732.01x = 77,879,709,097.78
  5. Step 5: Solve for x
    x = 77,879,709,097.78/310,732.01
  6. Step 6: Final answer
    x = 250,633.04

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1.5x scale

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.