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Finding the Fourth Proportional to 210,616.52, 315,941.10 and 70,375.64

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Solution

The fourth proportional to 210,616.52, 315,941.10 and 70,375.64 is: 105,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,616.52 : 315,941.10 = 70,375.64 : x
  2. Step 2: Convert to fraction form
    210,616.52/315,941.10 = 70,375.64/x
  3. Step 3: Cross multiply
    210,616.52x = 315,941.10 × 70,375.64
  4. Step 4: Simplify right side
    210,616.52x = 22,234,557,114.80
  5. Step 5: Solve for x
    x = 22,234,557,114.80/210,616.52
  6. Step 6: Final answer
    x = 105,568.91

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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.