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Finding the Fourth Proportional to 290,061.80, 400,279.05 and 160,992.73

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Solution

The fourth proportional to 290,061.80, 400,279.05 and 160,992.73 is: 222,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,061.80 : 400,279.05 = 160,992.73 : x
  2. Step 2: Convert to fraction form
    290,061.80/400,279.05 = 160,992.73/x
  3. Step 3: Cross multiply
    290,061.80x = 400,279.05 × 160,992.73
  4. Step 4: Simplify right side
    290,061.80x = 64,442,017,521.66
  5. Step 5: Solve for x
    x = 64,442,017,521.66/290,061.80
  6. Step 6: Final answer
    x = 222,166.51

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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.