Home / 378,943.20-522,941.72-209,177.33

Finding the Fourth Proportional to 378,943.20, 522,941.72 and 209,177.33

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Solution

The fourth proportional to 378,943.20, 522,941.72 and 209,177.33 is: 288,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,943.20 : 522,941.72 = 209,177.33 : x
  2. Step 2: Convert to fraction form
    378,943.20/522,941.72 = 209,177.33/x
  3. Step 3: Cross multiply
    378,943.20x = 522,941.72 × 209,177.33
  4. Step 4: Simplify right side
    378,943.20x = 109,387,549,074.61
  5. Step 5: Solve for x
    x = 109,387,549,074.61/378,943.20
  6. Step 6: Final answer
    x = 288,664.76

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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.