Home / 378,941.60-522,935.34-209,172.08

Finding the Fourth Proportional to 378,941.60, 522,935.34 and 209,172.08

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Solution

The fourth proportional to 378,941.60, 522,935.34 and 209,172.08 is: 288,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,941.60 : 522,935.34 = 209,172.08 : x
  2. Step 2: Convert to fraction form
    378,941.60/522,935.34 = 209,172.08/x
  3. Step 3: Cross multiply
    378,941.60x = 522,935.34 × 209,172.08
  4. Step 4: Simplify right side
    378,941.60x = 109,383,472,773.31
  5. Step 5: Solve for x
    x = 109,383,472,773.31/378,941.60
  6. Step 6: Final answer
    x = 288,655.22

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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.