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Finding the Fourth Proportional to 290,928.66, 401,480.10 and 170,045.88

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Solution

The fourth proportional to 290,928.66, 401,480.10 and 170,045.88 is: 234,662.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,928.66 : 401,480.10 = 170,045.88 : x
  2. Step 2: Convert to fraction form
    290,928.66/401,480.10 = 170,045.88/x
  3. Step 3: Cross multiply
    290,928.66x = 401,480.10 × 170,045.88
  4. Step 4: Simplify right side
    290,928.66x = 68,270,036,906.99
  5. Step 5: Solve for x
    x = 68,270,036,906.99/290,928.66
  6. Step 6: Final answer
    x = 234,662.47

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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.