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Finding the Fourth Proportional to 430,808.78, 594,515.90 and 239,867.28

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Solution

The fourth proportional to 430,808.78, 594,515.90 and 239,867.28 is: 331,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,808.78 : 594,515.90 = 239,867.28 : x
  2. Step 2: Convert to fraction form
    430,808.78/594,515.90 = 239,867.28/x
  3. Step 3: Cross multiply
    430,808.78x = 594,515.90 × 239,867.28
  4. Step 4: Simplify right side
    430,808.78x = 142,604,912,449.42
  5. Step 5: Solve for x
    x = 142,604,912,449.42/430,808.78
  6. Step 6: Final answer
    x = 331,016.73

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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.