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Finding the Fourth Proportional to 318,978.56, 440,174.64 and 175,734.80

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Solution

The fourth proportional to 318,978.56, 440,174.64 and 175,734.80 is: 242,505.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,978.56 : 440,174.64 = 175,734.80 : x
  2. Step 2: Convert to fraction form
    318,978.56/440,174.64 = 175,734.80/x
  3. Step 3: Cross multiply
    318,978.56x = 440,174.64 × 175,734.80
  4. Step 4: Simplify right side
    318,978.56x = 77,354,002,325.47
  5. Step 5: Solve for x
    x = 77,354,002,325.47/318,978.56
  6. Step 6: Final answer
    x = 242,505.33

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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.