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Finding the Fourth Proportional to 290,425.27, 400,781.82 and 161,364.93

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Solution

The fourth proportional to 290,425.27, 400,781.82 and 161,364.93 is: 222,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,425.27 : 400,781.82 = 161,364.93 : x
  2. Step 2: Convert to fraction form
    290,425.27/400,781.82 = 161,364.93/x
  3. Step 3: Cross multiply
    290,425.27x = 400,781.82 × 161,364.93
  4. Step 4: Simplify right side
    290,425.27x = 64,672,132,813.36
  5. Step 5: Solve for x
    x = 64,672,132,813.36/290,425.27
  6. Step 6: Final answer
    x = 222,680.80

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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.