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Finding the Fourth Proportional to 215,290.53, 322,640.55 and 136,263.69

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Solution

The fourth proportional to 215,290.53, 322,640.55 and 136,263.69 is: 204,208.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,290.53 : 322,640.55 = 136,263.69 : x
  2. Step 2: Convert to fraction form
    215,290.53/322,640.55 = 136,263.69/x
  3. Step 3: Cross multiply
    215,290.53x = 322,640.55 × 136,263.69
  4. Step 4: Simplify right side
    215,290.53x = 43,964,191,886.63
  5. Step 5: Solve for x
    x = 43,964,191,886.63/215,290.53
  6. Step 6: Final answer
    x = 204,208.67

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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.