Home / 212,951.28-319,357.81-70,758.38

Finding the Fourth Proportional to 212,951.28, 319,357.81 and 70,758.38

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Solution

The fourth proportional to 212,951.28, 319,357.81 and 70,758.38 is: 106,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,951.28 : 319,357.81 = 70,758.38 : x
  2. Step 2: Convert to fraction form
    212,951.28/319,357.81 = 70,758.38/x
  3. Step 3: Cross multiply
    212,951.28x = 319,357.81 × 70,758.38
  4. Step 4: Simplify right side
    212,951.28x = 22,597,239,968.39
  5. Step 5: Solve for x
    x = 22,597,239,968.39/212,951.28
  6. Step 6: Final answer
    x = 106,114.60

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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.