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Finding the Fourth Proportional to 318,662, 439,782.84 and 175,451.12

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Solution

The fourth proportional to 318,662, 439,782.84 and 175,451.12 is: 242,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,662 : 439,782.84 = 175,451.12 : x
  2. Step 2: Convert to fraction form
    318,662/439,782.84 = 175,451.12/x
  3. Step 3: Cross multiply
    318,662x = 439,782.84 × 175,451.12
  4. Step 4: Simplify right side
    318,662x = 77,160,391,834.78
  5. Step 5: Solve for x
    x = 77,160,391,834.78/318,662
  6. Step 6: Final answer
    x = 242,138.67

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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.