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Finding the Fourth Proportional to 272,758.91, 376,380.32 and 151,911.42

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Solution

The fourth proportional to 272,758.91, 376,380.32 and 151,911.42 is: 209,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,758.91 : 376,380.32 = 151,911.42 : x
  2. Step 2: Convert to fraction form
    272,758.91/376,380.32 = 151,911.42/x
  3. Step 3: Cross multiply
    272,758.91x = 376,380.32 × 151,911.42
  4. Step 4: Simplify right side
    272,758.91x = 57,176,468,111.70
  5. Step 5: Solve for x
    x = 57,176,468,111.70/272,758.91
  6. Step 6: Final answer
    x = 209,622.74

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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.