Home / 288,147,943.97-397,644,291.05-155,988,936.21

Finding the Fourth Proportional to 288,147,943.97, 397,644,291.05 and 155,988,936.21

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Solution

The fourth proportional to 288,147,943.97, 397,644,291.05 and 155,988,936.21 is: 215,264,801.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,147,943.97 : 397,644,291.05 = 155,988,936.21 : x
  2. Step 2: Convert to fraction form
    288,147,943.97/397,644,291.05 = 155,988,936.21/x
  3. Step 3: Cross multiply
    288,147,943.97x = 397,644,291.05 × 155,988,936.21
  4. Step 4: Simplify right side
    288,147,943.97x = 62,028,109,951,580,352
  5. Step 5: Solve for x
    x = 62,028,109,951,580,352/288,147,943.97
  6. Step 6: Final answer
    x = 215,264,801.47

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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.