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Finding the Fourth Proportional to 212,530.80, 318,796.20 and 162,764.40

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Solution

The fourth proportional to 212,530.80, 318,796.20 and 162,764.40 is: 244,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,530.80 : 318,796.20 = 162,764.40 : x
  2. Step 2: Convert to fraction form
    212,530.80/318,796.20 = 162,764.40/x
  3. Step 3: Cross multiply
    212,530.80x = 318,796.20 × 162,764.40
  4. Step 4: Simplify right side
    212,530.80x = 51,888,672,215.28
  5. Step 5: Solve for x
    x = 51,888,672,215.28/212,530.80
  6. Step 6: Final answer
    x = 244,146.60

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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.