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Finding the Fourth Proportional to 321,527.02, 443,729.60 and 178,300.40

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Solution

The fourth proportional to 321,527.02, 443,729.60 and 178,300.40 is: 246,066.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,527.02 : 443,729.60 = 178,300.40 : x
  2. Step 2: Convert to fraction form
    321,527.02/443,729.60 = 178,300.40/x
  3. Step 3: Cross multiply
    321,527.02x = 443,729.60 × 178,300.40
  4. Step 4: Simplify right side
    321,527.02x = 79,117,165,171.84
  5. Step 5: Solve for x
    x = 79,117,165,171.84/321,527.02
  6. Step 6: Final answer
    x = 246,066.93

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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.