Home / 378,895.42-522,838.43-209,118.60

Finding the Fourth Proportional to 378,895.42, 522,838.43 and 209,118.60

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Solution

The fourth proportional to 378,895.42, 522,838.43 and 209,118.60 is: 288,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,895.42 : 522,838.43 = 209,118.60 : x
  2. Step 2: Convert to fraction form
    378,895.42/522,838.43 = 209,118.60/x
  3. Step 3: Cross multiply
    378,895.42x = 522,838.43 × 209,118.60
  4. Step 4: Simplify right side
    378,895.42x = 109,335,240,507.80
  5. Step 5: Solve for x
    x = 109,335,240,507.80/378,895.42
  6. Step 6: Final answer
    x = 288,563.11

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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.