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Finding the Fourth Proportional to 348,082.61, 480,311.01 and 212,067.20

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Solution

The fourth proportional to 348,082.61, 480,311.01 and 212,067.20 is: 292,626.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,082.61 : 480,311.01 = 212,067.20 : x
  2. Step 2: Convert to fraction form
    348,082.61/480,311.01 = 212,067.20/x
  3. Step 3: Cross multiply
    348,082.61x = 480,311.01 × 212,067.20
  4. Step 4: Simplify right side
    348,082.61x = 101,858,208,618.32
  5. Step 5: Solve for x
    x = 101,858,208,618.32/348,082.61
  6. Step 6: Final answer
    x = 292,626.54

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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.