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Finding the Fourth Proportional to 318,635.67, 439,717.14 and 175,395

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Solution

The fourth proportional to 318,635.67, 439,717.14 and 175,395 is: 242,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,635.67 : 439,717.14 = 175,395 : x
  2. Step 2: Convert to fraction form
    318,635.67/439,717.14 = 175,395/x
  3. Step 3: Cross multiply
    318,635.67x = 439,717.14 × 175,395
  4. Step 4: Simplify right side
    318,635.67x = 77,124,187,770.30
  5. Step 5: Solve for x
    x = 77,124,187,770.30/318,635.67
  6. Step 6: Final answer
    x = 242,045.05

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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.