Home / 378,119.61-521,784.45-234,877.05

Finding the Fourth Proportional to 378,119.61, 521,784.45 and 234,877.05

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Solution

The fourth proportional to 378,119.61, 521,784.45 and 234,877.05 is: 324,117.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,119.61 : 521,784.45 = 234,877.05 : x
  2. Step 2: Convert to fraction form
    378,119.61/521,784.45 = 234,877.05/x
  3. Step 3: Cross multiply
    378,119.61x = 521,784.45 × 234,877.05
  4. Step 4: Simplify right side
    378,119.61x = 122,555,192,351.87
  5. Step 5: Solve for x
    x = 122,555,192,351.87/378,119.61
  6. Step 6: Final answer
    x = 324,117.53

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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.