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Finding the Fourth Proportional to 271,439.40, 406,964.70 and 113,586.60

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Solution

The fourth proportional to 271,439.40, 406,964.70 and 113,586.60 is: 170,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,439.40 : 406,964.70 = 113,586.60 : x
  2. Step 2: Convert to fraction form
    271,439.40/406,964.70 = 113,586.60/x
  3. Step 3: Cross multiply
    271,439.40x = 406,964.70 × 113,586.60
  4. Step 4: Simplify right side
    271,439.40x = 46,225,736,593.02
  5. Step 5: Solve for x
    x = 46,225,736,593.02/271,439.40
  6. Step 6: Final answer
    x = 170,298.55

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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.