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Finding the Fourth Proportional to 378,207.90, 522,015.84 and 235,076.04

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Solution

The fourth proportional to 378,207.90, 522,015.84 and 235,076.04 is: 324,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,207.90 : 522,015.84 = 235,076.04 : x
  2. Step 2: Convert to fraction form
    378,207.90/522,015.84 = 235,076.04/x
  3. Step 3: Cross multiply
    378,207.90x = 522,015.84 × 235,076.04
  4. Step 4: Simplify right side
    378,207.90x = 122,713,416,484.47
  5. Step 5: Solve for x
    x = 122,713,416,484.47/378,207.90
  6. Step 6: Final answer
    x = 324,460.21

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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.