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Finding the Fourth Proportional to 289,941.72, 400,118.70 and 162,620.04

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Solution

The fourth proportional to 289,941.72, 400,118.70 and 162,620.04 is: 224,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,941.72 : 400,118.70 = 162,620.04 : x
  2. Step 2: Convert to fraction form
    289,941.72/400,118.70 = 162,620.04/x
  3. Step 3: Cross multiply
    289,941.72x = 400,118.70 × 162,620.04
  4. Step 4: Simplify right side
    289,941.72x = 65,067,318,998.75
  5. Step 5: Solve for x
    x = 65,067,318,998.75/289,941.72
  6. Step 6: Final answer
    x = 224,415.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.