Home / 378,536.14-522,388.40-215,166.74

Finding the Fourth Proportional to 378,536.14, 522,388.40 and 215,166.74

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Solution

The fourth proportional to 378,536.14, 522,388.40 and 215,166.74 is: 296,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,536.14 : 522,388.40 = 215,166.74 : x
  2. Step 2: Convert to fraction form
    378,536.14/522,388.40 = 215,166.74/x
  3. Step 3: Cross multiply
    378,536.14x = 522,388.40 × 215,166.74
  4. Step 4: Simplify right side
    378,536.14x = 112,400,609,041.82
  5. Step 5: Solve for x
    x = 112,400,609,041.82/378,536.14
  6. Step 6: Final answer
    x = 296,934.95

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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.