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Finding the Fourth Proportional to 378,788.40, 522,255.32 and 242,598.56

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Solution

The fourth proportional to 378,788.40, 522,255.32 and 242,598.56 is: 334,483.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,788.40 : 522,255.32 = 242,598.56 : x
  2. Step 2: Convert to fraction form
    378,788.40/522,255.32 = 242,598.56/x
  3. Step 3: Cross multiply
    378,788.40x = 522,255.32 × 242,598.56
  4. Step 4: Simplify right side
    378,788.40x = 126,698,388,584.34
  5. Step 5: Solve for x
    x = 126,698,388,584.34/378,788.40
  6. Step 6: Final answer
    x = 334,483.29

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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.