Home / 321,320.76-443,422.64-178,102.32

Finding the Fourth Proportional to 321,320.76, 443,422.64 and 178,102.32

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Solution

The fourth proportional to 321,320.76, 443,422.64 and 178,102.32 is: 245,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,320.76 : 443,422.64 = 178,102.32 : x
  2. Step 2: Convert to fraction form
    321,320.76/443,422.64 = 178,102.32/x
  3. Step 3: Cross multiply
    321,320.76x = 443,422.64 × 178,102.32
  4. Step 4: Simplify right side
    321,320.76x = 78,974,600,924.52
  5. Step 5: Solve for x
    x = 78,974,600,924.52/321,320.76
  6. Step 6: Final answer
    x = 245,781.20

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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.