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Finding the Fourth Proportional to 310,616.88, 465,935.64 and 85,958.52

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Solution

The fourth proportional to 310,616.88, 465,935.64 and 85,958.52 is: 128,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,616.88 : 465,935.64 = 85,958.52 : x
  2. Step 2: Convert to fraction form
    310,616.88/465,935.64 = 85,958.52/x
  3. Step 3: Cross multiply
    310,616.88x = 465,935.64 × 85,958.52
  4. Step 4: Simplify right side
    310,616.88x = 40,051,138,029.65
  5. Step 5: Solve for x
    x = 40,051,138,029.65/310,616.88
  6. Step 6: Final answer
    x = 128,940.64

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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.