Home / 320,824.20-480,653.10-261,337.80

Finding the Fourth Proportional to 320,824.20, 480,653.10 and 261,337.80

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Solution

The fourth proportional to 320,824.20, 480,653.10 and 261,337.80 is: 391,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,824.20 : 480,653.10 = 261,337.80 : x
  2. Step 2: Convert to fraction form
    320,824.20/480,653.10 = 261,337.80/x
  3. Step 3: Cross multiply
    320,824.20x = 480,653.10 × 261,337.80
  4. Step 4: Simplify right side
    320,824.20x = 125,612,823,717.18
  5. Step 5: Solve for x
    x = 125,612,823,717.18/320,824.20
  6. Step 6: Final answer
    x = 391,531.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.