Home / 318,631.20-439,674.98-187,800.30

Finding the Fourth Proportional to 318,631.20, 439,674.98 and 187,800.30

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Solution

The fourth proportional to 318,631.20, 439,674.98 and 187,800.30 is: 259,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,631.20 : 439,674.98 = 187,800.30 : x
  2. Step 2: Convert to fraction form
    318,631.20/439,674.98 = 187,800.30/x
  3. Step 3: Cross multiply
    318,631.20x = 439,674.98 × 187,800.30
  4. Step 4: Simplify right side
    318,631.20x = 82,571,092,207.49
  5. Step 5: Solve for x
    x = 82,571,092,207.49/318,631.20
  6. Step 6: Final answer
    x = 259,143.15

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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.