Home / 319,320.12-440,643.66-198,458.30

Finding the Fourth Proportional to 319,320.12, 440,643.66 and 198,458.30

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Solution

The fourth proportional to 319,320.12, 440,643.66 and 198,458.30 is: 273,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,320.12 : 440,643.66 = 198,458.30 : x
  2. Step 2: Convert to fraction form
    319,320.12/440,643.66 = 198,458.30/x
  3. Step 3: Cross multiply
    319,320.12x = 440,643.66 × 198,458.30
  4. Step 4: Simplify right side
    319,320.12x = 87,449,391,669.38
  5. Step 5: Solve for x
    x = 87,449,391,669.38/319,320.12
  6. Step 6: Final answer
    x = 273,861.20

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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.