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Finding the Fourth Proportional to 210,850.16, 316,195.65 and 68,658.30

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Solution

The fourth proportional to 210,850.16, 316,195.65 and 68,658.30 is: 102,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,850.16 : 316,195.65 = 68,658.30 : x
  2. Step 2: Convert to fraction form
    210,850.16/316,195.65 = 68,658.30/x
  3. Step 3: Cross multiply
    210,850.16x = 316,195.65 × 68,658.30
  4. Step 4: Simplify right side
    210,850.16x = 21,709,455,796.40
  5. Step 5: Solve for x
    x = 21,709,455,796.40/210,850.16
  6. Step 6: Final answer
    x = 102,961.54

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1.5x scale

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.