Home / 378,168,987.42-521,873,203.64-204,328,731.42

Finding the Fourth Proportional to 378,168,987.42, 521,873,203.64 and 204,328,731.42

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Solution

The fourth proportional to 378,168,987.42, 521,873,203.64 and 204,328,731.42 is: 281,973,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,168,987.42 : 521,873,203.64 = 204,328,731.42 : x
  2. Step 2: Convert to fraction form
    378,168,987.42/521,873,203.64 = 204,328,731.42/x
  3. Step 3: Cross multiply
    378,168,987.42x = 521,873,203.64 × 204,328,731.42
  4. Step 4: Simplify right side
    378,168,987.42x = 106,633,689,661,852,512
  5. Step 5: Solve for x
    x = 106,633,689,661,852,512/378,168,987.42
  6. Step 6: Final answer
    x = 281,973,649.90

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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.