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Finding the Fourth Proportional to 399,252.60, 599,352.72 and 315,073.08

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Solution

The fourth proportional to 399,252.60, 599,352.72 and 315,073.08 is: 472,983.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,252.60 : 599,352.72 = 315,073.08 : x
  2. Step 2: Convert to fraction form
    399,252.60/599,352.72 = 315,073.08/x
  3. Step 3: Cross multiply
    399,252.60x = 599,352.72 × 315,073.08
  4. Step 4: Simplify right side
    399,252.60x = 188,839,907,496.78
  5. Step 5: Solve for x
    x = 188,839,907,496.78/399,252.60
  6. Step 6: Final answer
    x = 472,983.54

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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.