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Finding the Fourth Proportional to 204,934.60, 307,401.90 and 191,715.40

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Solution

The fourth proportional to 204,934.60, 307,401.90 and 191,715.40 is: 287,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,934.60 : 307,401.90 = 191,715.40 : x
  2. Step 2: Convert to fraction form
    204,934.60/307,401.90 = 191,715.40/x
  3. Step 3: Cross multiply
    204,934.60x = 307,401.90 × 191,715.40
  4. Step 4: Simplify right side
    204,934.60x = 58,933,678,219.26
  5. Step 5: Solve for x
    x = 58,933,678,219.26/204,934.60
  6. Step 6: Final answer
    x = 287,573.10

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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.