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Finding the Fourth Proportional to 399,551.72, 599,326.50 and 329,147.96

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Solution

The fourth proportional to 399,551.72, 599,326.50 and 329,147.96 is: 493,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,551.72 : 599,326.50 = 329,147.96 : x
  2. Step 2: Convert to fraction form
    399,551.72/599,326.50 = 329,147.96/x
  3. Step 3: Cross multiply
    399,551.72x = 599,326.50 × 329,147.96
  4. Step 4: Simplify right side
    399,551.72x = 197,267,094,848.94
  5. Step 5: Solve for x
    x = 197,267,094,848.94/399,551.72
  6. Step 6: Final answer
    x = 493,721.05

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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.