Home / 319,319.11-440,642.28-198,457.30

Finding the Fourth Proportional to 319,319.11, 440,642.28 and 198,457.30

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Solution

The fourth proportional to 319,319.11, 440,642.28 and 198,457.30 is: 273,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,319.11 : 440,642.28 = 198,457.30 : x
  2. Step 2: Convert to fraction form
    319,319.11/440,642.28 = 198,457.30/x
  3. Step 3: Cross multiply
    319,319.11x = 440,642.28 × 198,457.30
  4. Step 4: Simplify right side
    319,319.11x = 87,448,677,154.64
  5. Step 5: Solve for x
    x = 87,448,677,154.64/319,319.11
  6. Step 6: Final answer
    x = 273,859.83

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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.