Home / 378,194,923.78-521,909,691.24-210,941,965.43

Finding the Fourth Proportional to 378,194,923.78, 521,909,691.24 and 210,941,965.43

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Solution

The fourth proportional to 378,194,923.78, 521,909,691.24 and 210,941,965.43 is: 291,100,300.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,194,923.78 : 521,909,691.24 = 210,941,965.43 : x
  2. Step 2: Convert to fraction form
    378,194,923.78/521,909,691.24 = 210,941,965.43/x
  3. Step 3: Cross multiply
    378,194,923.78x = 521,909,691.24 × 210,941,965.43
  4. Step 4: Simplify right side
    378,194,923.78x = 110,092,656,047,657,408
  5. Step 5: Solve for x
    x = 110,092,656,047,657,408/378,194,923.78
  6. Step 6: Final answer
    x = 291,100,300.73

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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.