Home / 661,515.12-992,278.22-212,236.74

Finding the Fourth Proportional to 661,515.12, 992,278.22 and 212,236.74

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Solution

The fourth proportional to 661,515.12, 992,278.22 and 212,236.74 is: 318,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,515.12 : 992,278.22 = 212,236.74 : x
  2. Step 2: Convert to fraction form
    661,515.12/992,278.22 = 212,236.74/x
  3. Step 3: Cross multiply
    661,515.12x = 992,278.22 × 212,236.74
  4. Step 4: Simplify right side
    661,515.12x = 210,597,893,524.62
  5. Step 5: Solve for x
    x = 210,597,893,524.62/661,515.12
  6. Step 6: Final answer
    x = 318,356.89

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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.