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Finding the Fourth Proportional to 318,661, 439,781.46 and 175,450.12

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Solution

The fourth proportional to 318,661, 439,781.46 and 175,450.12 is: 242,137.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,661 : 439,781.46 = 175,450.12 : x
  2. Step 2: Convert to fraction form
    318,661/439,781.46 = 175,450.12/x
  3. Step 3: Cross multiply
    318,661x = 439,781.46 × 175,450.12
  4. Step 4: Simplify right side
    318,661x = 77,159,709,930.78
  5. Step 5: Solve for x
    x = 77,159,709,930.78/318,661
  6. Step 6: Final answer
    x = 242,137.29

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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.