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Finding the Fourth Proportional to 318,778.70, 439,914.59 and 175,538.39

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Solution

The fourth proportional to 318,778.70, 439,914.59 and 175,538.39 is: 242,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,778.70 : 439,914.59 = 175,538.39 : x
  2. Step 2: Convert to fraction form
    318,778.70/439,914.59 = 175,538.39/x
  3. Step 3: Cross multiply
    318,778.70x = 439,914.59 × 175,538.39
  4. Step 4: Simplify right side
    318,778.70x = 77,221,895,788.85
  5. Step 5: Solve for x
    x = 77,221,895,788.85/318,778.70
  6. Step 6: Final answer
    x = 242,242.96

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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.