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Finding the Fourth Proportional to 318,884.40, 440,060.40 and 175,644.43

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Solution

The fourth proportional to 318,884.40, 440,060.40 and 175,644.43 is: 242,389.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,884.40 : 440,060.40 = 175,644.43 : x
  2. Step 2: Convert to fraction form
    318,884.40/440,060.40 = 175,644.43/x
  3. Step 3: Cross multiply
    318,884.40x = 440,060.40 × 175,644.43
  4. Step 4: Simplify right side
    318,884.40x = 77,294,158,123.57
  5. Step 5: Solve for x
    x = 77,294,158,123.57/318,884.40
  6. Step 6: Final answer
    x = 242,389.27

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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.