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Finding the Fourth Proportional to 318,639.70, 439,722.66 and 175,399

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Solution

The fourth proportional to 318,639.70, 439,722.66 and 175,399 is: 242,050.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,639.70 : 439,722.66 = 175,399 : x
  2. Step 2: Convert to fraction form
    318,639.70/439,722.66 = 175,399/x
  3. Step 3: Cross multiply
    318,639.70x = 439,722.66 × 175,399
  4. Step 4: Simplify right side
    318,639.70x = 77,126,914,841.34
  5. Step 5: Solve for x
    x = 77,126,914,841.34/318,639.70
  6. Step 6: Final answer
    x = 242,050.55

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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.