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Finding the Fourth Proportional to 309,726.01, 427,505.48 and 202,293.73

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Solution

The fourth proportional to 309,726.01, 427,505.48 and 202,293.73 is: 279,219.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,726.01 : 427,505.48 = 202,293.73 : x
  2. Step 2: Convert to fraction form
    309,726.01/427,505.48 = 202,293.73/x
  3. Step 3: Cross multiply
    309,726.01x = 427,505.48 × 202,293.73
  4. Step 4: Simplify right side
    309,726.01x = 86,481,678,144.64
  5. Step 5: Solve for x
    x = 86,481,678,144.64/309,726.01
  6. Step 6: Final answer
    x = 279,219.94

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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.