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Finding the Fourth Proportional to 290,967.39, 401,474.80 and 170,085.28

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Solution

The fourth proportional to 290,967.39, 401,474.80 and 170,085.28 is: 234,682.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,967.39 : 401,474.80 = 170,085.28 : x
  2. Step 2: Convert to fraction form
    290,967.39/401,474.80 = 170,085.28/x
  3. Step 3: Cross multiply
    290,967.39x = 401,474.80 × 170,085.28
  4. Step 4: Simplify right side
    290,967.39x = 68,284,952,920.52
  5. Step 5: Solve for x
    x = 68,284,952,920.52/290,967.39
  6. Step 6: Final answer
    x = 234,682.50

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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.