Home / 319,318.11-440,640.90-198,456.30

Finding the Fourth Proportional to 319,318.11, 440,640.90 and 198,456.30

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Solution

The fourth proportional to 319,318.11, 440,640.90 and 198,456.30 is: 273,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,318.11 : 440,640.90 = 198,456.30 : x
  2. Step 2: Convert to fraction form
    319,318.11/440,640.90 = 198,456.30/x
  3. Step 3: Cross multiply
    319,318.11x = 440,640.90 × 198,456.30
  4. Step 4: Simplify right side
    319,318.11x = 87,447,962,642.67
  5. Step 5: Solve for x
    x = 87,447,962,642.67/319,318.11
  6. Step 6: Final answer
    x = 273,858.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.