Home / 378,839.39-522,795.95-209,073.53

Finding the Fourth Proportional to 378,839.39, 522,795.95 and 209,073.53

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Solution

The fourth proportional to 378,839.39, 522,795.95 and 209,073.53 is: 288,520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,839.39 : 522,795.95 = 209,073.53 : x
  2. Step 2: Convert to fraction form
    378,839.39/522,795.95 = 209,073.53/x
  3. Step 3: Cross multiply
    378,839.39x = 522,795.95 × 209,073.53
  4. Step 4: Simplify right side
    378,839.39x = 109,302,793,690.84
  5. Step 5: Solve for x
    x = 109,302,793,690.84/378,839.39
  6. Step 6: Final answer
    x = 288,520.14

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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.