Home / 215,115.40-322,629.90-102,795.40

Finding the Fourth Proportional to 215,115.40, 322,629.90 and 102,795.40

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Solution

The fourth proportional to 215,115.40, 322,629.90 and 102,795.40 is: 154,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,115.40 : 322,629.90 = 102,795.40 : x
  2. Step 2: Convert to fraction form
    215,115.40/322,629.90 = 102,795.40/x
  3. Step 3: Cross multiply
    215,115.40x = 322,629.90 × 102,795.40
  4. Step 4: Simplify right side
    215,115.40x = 33,164,869,622.46
  5. Step 5: Solve for x
    x = 33,164,869,622.46/215,115.40
  6. Step 6: Final answer
    x = 154,172.46

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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.