Home / 378,168.35-521,897.65-208,402.47

Finding the Fourth Proportional to 378,168.35, 521,897.65 and 208,402.47

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Solution

The fourth proportional to 378,168.35, 521,897.65 and 208,402.47 is: 287,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,168.35 : 521,897.65 = 208,402.47 : x
  2. Step 2: Convert to fraction form
    378,168.35/521,897.65 = 208,402.47/x
  3. Step 3: Cross multiply
    378,168.35x = 521,897.65 × 208,402.47
  4. Step 4: Simplify right side
    378,168.35x = 108,764,758,826.19
  5. Step 5: Solve for x
    x = 108,764,758,826.19/378,168.35
  6. Step 6: Final answer
    x = 287,609.37

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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.