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Finding the Fourth Proportional to 212,910.52, 319,390.44 and 70,768.48

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Solution

The fourth proportional to 212,910.52, 319,390.44 and 70,768.48 is: 106,160.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,910.52 : 319,390.44 = 70,768.48 : x
  2. Step 2: Convert to fraction form
    212,910.52/319,390.44 = 70,768.48/x
  3. Step 3: Cross multiply
    212,910.52x = 319,390.44 × 70,768.48
  4. Step 4: Simplify right side
    212,910.52x = 22,602,775,965.33
  5. Step 5: Solve for x
    x = 22,602,775,965.33/212,910.52
  6. Step 6: Final answer
    x = 106,160.92

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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.