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Finding the Fourth Proportional to 321,787.86, 444,031.65 and 178,512.18

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Solution

The fourth proportional to 321,787.86, 444,031.65 and 178,512.18 is: 246,327.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,787.86 : 444,031.65 = 178,512.18 : x
  2. Step 2: Convert to fraction form
    321,787.86/444,031.65 = 178,512.18/x
  3. Step 3: Cross multiply
    321,787.86x = 444,031.65 × 178,512.18
  4. Step 4: Simplify right side
    321,787.86x = 79,265,057,830.50
  5. Step 5: Solve for x
    x = 79,265,057,830.50/321,787.86
  6. Step 6: Final answer
    x = 246,327.06

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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.