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Finding the Fourth Proportional to 321,790.76, 444,071.20 and 178,551.80

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Solution

The fourth proportional to 321,790.76, 444,071.20 and 178,551.80 is: 246,401.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,790.76 : 444,071.20 = 178,551.80 : x
  2. Step 2: Convert to fraction form
    321,790.76/444,071.20 = 178,551.80/x
  3. Step 3: Cross multiply
    321,790.76x = 444,071.20 × 178,551.80
  4. Step 4: Simplify right side
    321,790.76x = 79,289,712,088.16
  5. Step 5: Solve for x
    x = 79,289,712,088.16/321,790.76
  6. Step 6: Final answer
    x = 246,401.46

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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.