Home / 378,168,981.12-521,873,194.95-204,328,725.12

Finding the Fourth Proportional to 378,168,981.12, 521,873,194.95 and 204,328,725.12

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Solution

The fourth proportional to 378,168,981.12, 521,873,194.95 and 204,328,725.12 is: 281,973,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,168,981.12 : 521,873,194.95 = 204,328,725.12 : x
  2. Step 2: Convert to fraction form
    378,168,981.12/521,873,194.95 = 204,328,725.12/x
  3. Step 3: Cross multiply
    378,168,981.12x = 521,873,194.95 × 204,328,725.12
  4. Step 4: Simplify right side
    378,168,981.12x = 106,633,684,598,434,720
  5. Step 5: Solve for x
    x = 106,633,684,598,434,720/378,168,981.12
  6. Step 6: Final answer
    x = 281,973,641.21

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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.