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Finding the Fourth Proportional to 543,695.79, 815,334.09 and 206,558.82

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Solution

The fourth proportional to 543,695.79, 815,334.09 and 206,558.82 is: 309,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,695.79 : 815,334.09 = 206,558.82 : x
  2. Step 2: Convert to fraction form
    543,695.79/815,334.09 = 206,558.82/x
  3. Step 3: Cross multiply
    543,695.79x = 815,334.09 × 206,558.82
  4. Step 4: Simplify right side
    543,695.79x = 168,414,447,536.17
  5. Step 5: Solve for x
    x = 168,414,447,536.17/543,695.79
  6. Step 6: Final answer
    x = 309,758.60

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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.