Home / 661,486.75-992,176.23-212,086.60

Finding the Fourth Proportional to 661,486.75, 992,176.23 and 212,086.60

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Solution

The fourth proportional to 661,486.75, 992,176.23 and 212,086.60 is: 318,112.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,486.75 : 992,176.23 = 212,086.60 : x
  2. Step 2: Convert to fraction form
    661,486.75/992,176.23 = 212,086.60/x
  3. Step 3: Cross multiply
    661,486.75x = 992,176.23 × 212,086.60
  4. Step 4: Simplify right side
    661,486.75x = 210,427,283,221.52
  5. Step 5: Solve for x
    x = 210,427,283,221.52/661,486.75
  6. Step 6: Final answer
    x = 318,112.62

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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.