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Finding the Fourth Proportional to 321,798.39, 444,084.84 and 178,571.76

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Solution

The fourth proportional to 321,798.39, 444,084.84 and 178,571.76 is: 246,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,798.39 : 444,084.84 = 178,571.76 : x
  2. Step 2: Convert to fraction form
    321,798.39/444,084.84 = 178,571.76/x
  3. Step 3: Cross multiply
    321,798.39x = 444,084.84 × 178,571.76
  4. Step 4: Simplify right side
    321,798.39x = 79,301,011,468.12
  5. Step 5: Solve for x
    x = 79,301,011,468.12/321,798.39
  6. Step 6: Final answer
    x = 246,430.73

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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.