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Finding the Fourth Proportional to 517,556.40, 775,872.90 and 201,939.90

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Solution

The fourth proportional to 517,556.40, 775,872.90 and 201,939.90 is: 302,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,556.40 : 775,872.90 = 201,939.90 : x
  2. Step 2: Convert to fraction form
    517,556.40/775,872.90 = 201,939.90/x
  3. Step 3: Cross multiply
    517,556.40x = 775,872.90 × 201,939.90
  4. Step 4: Simplify right side
    517,556.40x = 156,679,695,838.71
  5. Step 5: Solve for x
    x = 156,679,695,838.71/517,556.40
  6. Step 6: Final answer
    x = 302,729.70

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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.