Home / 386,032.88-578,907-133,249.04

Finding the Fourth Proportional to 386,032.88, 578,907 and 133,249.04

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Solution

The fourth proportional to 386,032.88, 578,907 and 133,249.04 is: 199,824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,032.88 : 578,907 = 133,249.04 : x
  2. Step 2: Convert to fraction form
    386,032.88/578,907 = 133,249.04/x
  3. Step 3: Cross multiply
    386,032.88x = 578,907 × 133,249.04
  4. Step 4: Simplify right side
    386,032.88x = 77,138,801,999.28
  5. Step 5: Solve for x
    x = 77,138,801,999.28/386,032.88
  6. Step 6: Final answer
    x = 199,824.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.