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Finding the Fourth Proportional to 290,486.00, 400,860.01 and 161,432.49

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Solution

The fourth proportional to 290,486.00, 400,860.01 and 161,432.49 is: 222,770.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,486.00 : 400,860.01 = 161,432.49 : x
  2. Step 2: Convert to fraction form
    290,486.00/400,860.01 = 161,432.49/x
  3. Step 3: Cross multiply
    290,486.00x = 400,860.01 × 161,432.49
  4. Step 4: Simplify right side
    290,486.00x = 64,711,831,714.77
  5. Step 5: Solve for x
    x = 64,711,831,714.77/290,486.00
  6. Step 6: Final answer
    x = 222,770.92

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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.