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Finding the Fourth Proportional to 290,334.73, 400,667.06 and 161,284.87

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Solution

The fourth proportional to 290,334.73, 400,667.06 and 161,284.87 is: 222,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,334.73 : 400,667.06 = 161,284.87 : x
  2. Step 2: Convert to fraction form
    290,334.73/400,667.06 = 161,284.87/x
  3. Step 3: Cross multiply
    290,334.73x = 400,667.06 × 161,284.87
  4. Step 4: Simplify right side
    290,334.73x = 64,621,534,682.20
  5. Step 5: Solve for x
    x = 64,621,534,682.20/290,334.73
  6. Step 6: Final answer
    x = 222,575.97

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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.