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Finding the Fourth Proportional to 310,991.40, 466,487.10 and 111,318.30

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Solution

The fourth proportional to 310,991.40, 466,487.10 and 111,318.30 is: 166,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,991.40 : 466,487.10 = 111,318.30 : x
  2. Step 2: Convert to fraction form
    310,991.40/466,487.10 = 111,318.30/x
  3. Step 3: Cross multiply
    310,991.40x = 466,487.10 × 111,318.30
  4. Step 4: Simplify right side
    310,991.40x = 51,928,550,943.93
  5. Step 5: Solve for x
    x = 51,928,550,943.93/310,991.40
  6. Step 6: Final answer
    x = 166,977.45

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Similar ratio
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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.