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Finding the Fourth Proportional to 290,009.36, 400,181.64 and 167,494.16

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Solution

The fourth proportional to 290,009.36, 400,181.64 and 167,494.16 is: 231,123.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,009.36 : 400,181.64 = 167,494.16 : x
  2. Step 2: Convert to fraction form
    290,009.36/400,181.64 = 167,494.16/x
  3. Step 3: Cross multiply
    290,009.36x = 400,181.64 × 167,494.16
  4. Step 4: Simplify right side
    290,009.36x = 67,028,087,639.22
  5. Step 5: Solve for x
    x = 67,028,087,639.22/290,009.36
  6. Step 6: Final answer
    x = 231,123.88

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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.