Home / 378,968.04-522,962.19-209,198.52

Finding the Fourth Proportional to 378,968.04, 522,962.19 and 209,198.52

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Solution

The fourth proportional to 378,968.04, 522,962.19 and 209,198.52 is: 288,686.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,968.04 : 522,962.19 = 209,198.52 : x
  2. Step 2: Convert to fraction form
    378,968.04/522,962.19 = 209,198.52/x
  3. Step 3: Cross multiply
    378,968.04x = 522,962.19 × 209,198.52
  4. Step 4: Simplify right side
    378,968.04x = 109,402,916,163.96
  5. Step 5: Solve for x
    x = 109,402,916,163.96/378,968.04
  6. Step 6: Final answer
    x = 288,686.39

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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.