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Finding the Fourth Proportional to 194,986.60, 292,479.90 and 161,744.20

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Solution

The fourth proportional to 194,986.60, 292,479.90 and 161,744.20 is: 242,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,986.60 : 292,479.90 = 161,744.20 : x
  2. Step 2: Convert to fraction form
    194,986.60/292,479.90 = 161,744.20/x
  3. Step 3: Cross multiply
    194,986.60x = 292,479.90 × 161,744.20
  4. Step 4: Simplify right side
    194,986.60x = 47,306,927,441.58
  5. Step 5: Solve for x
    x = 47,306,927,441.58/194,986.60
  6. Step 6: Final answer
    x = 242,616.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.