Home / 318,828.96-439,995.66-198,036.84

Finding the Fourth Proportional to 318,828.96, 439,995.66 and 198,036.84

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Solution

The fourth proportional to 318,828.96, 439,995.66 and 198,036.84 is: 273,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,828.96 : 439,995.66 = 198,036.84 : x
  2. Step 2: Convert to fraction form
    318,828.96/439,995.66 = 198,036.84/x
  3. Step 3: Cross multiply
    318,828.96x = 439,995.66 × 198,036.84
  4. Step 4: Simplify right side
    318,828.96x = 87,135,350,120.11
  5. Step 5: Solve for x
    x = 87,135,350,120.11/318,828.96
  6. Step 6: Final answer
    x = 273,298.10

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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.