Home / 638,968.21-958,092.67-212,275.60

Finding the Fourth Proportional to 638,968.21, 958,092.67 and 212,275.60

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Solution

The fourth proportional to 638,968.21, 958,092.67 and 212,275.60 is: 318,293.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,968.21 : 958,092.67 = 212,275.60 : x
  2. Step 2: Convert to fraction form
    638,968.21/958,092.67 = 212,275.60/x
  3. Step 3: Cross multiply
    638,968.21x = 958,092.67 × 212,275.60
  4. Step 4: Simplify right side
    638,968.21x = 203,379,696,379.85
  5. Step 5: Solve for x
    x = 203,379,696,379.85/638,968.21
  6. Step 6: Final answer
    x = 318,293.92

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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.