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Finding the Fourth Proportional to 290,015.82, 400,132.15 and 169,071.48

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Solution

The fourth proportional to 290,015.82, 400,132.15 and 169,071.48 is: 233,266.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,015.82 : 400,132.15 = 169,071.48 : x
  2. Step 2: Convert to fraction form
    290,015.82/400,132.15 = 169,071.48/x
  3. Step 3: Cross multiply
    290,015.82x = 400,132.15 × 169,071.48
  4. Step 4: Simplify right side
    290,015.82x = 67,650,934,796.08
  5. Step 5: Solve for x
    x = 67,650,934,796.08/290,015.82
  6. Step 6: Final answer
    x = 233,266.36

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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.