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Finding the Fourth Proportional to 425,393.63, 638,102.82 and 159,103.34

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Solution

The fourth proportional to 425,393.63, 638,102.82 and 159,103.34 is: 238,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,393.63 : 638,102.82 = 159,103.34 : x
  2. Step 2: Convert to fraction form
    425,393.63/638,102.82 = 159,103.34/x
  3. Step 3: Cross multiply
    425,393.63x = 638,102.82 × 159,103.34
  4. Step 4: Simplify right side
    425,393.63x = 101,524,289,925.42
  5. Step 5: Solve for x
    x = 101,524,289,925.42/425,393.63
  6. Step 6: Final answer
    x = 238,659.64

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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.