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Finding the Fourth Proportional to 321,607.92, 443,812.32 and 178,344.84

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Solution

The fourth proportional to 321,607.92, 443,812.32 and 178,344.84 is: 246,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,607.92 : 443,812.32 = 178,344.84 : x
  2. Step 2: Convert to fraction form
    321,607.92/443,812.32 = 178,344.84/x
  3. Step 3: Cross multiply
    321,607.92x = 443,812.32 × 178,344.84
  4. Step 4: Simplify right side
    321,607.92x = 79,151,637,200.43
  5. Step 5: Solve for x
    x = 79,151,637,200.43/321,607.92
  6. Step 6: Final answer
    x = 246,112.21

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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.