Home / 318,742.50-439,732.83-189,655.23

Finding the Fourth Proportional to 318,742.50, 439,732.83 and 189,655.23

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Solution

The fourth proportional to 318,742.50, 439,732.83 and 189,655.23 is: 261,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,742.50 : 439,732.83 = 189,655.23 : x
  2. Step 2: Convert to fraction form
    318,742.50/439,732.83 = 189,655.23/x
  3. Step 3: Cross multiply
    318,742.50x = 439,732.83 × 189,655.23
  4. Step 4: Simplify right side
    318,742.50x = 83,397,631,012.20
  5. Step 5: Solve for x
    x = 83,397,631,012.20/318,742.50
  6. Step 6: Final answer
    x = 261,645.78

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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.