Home / 386,039.88-578,917.50-133,256.04

Finding the Fourth Proportional to 386,039.88, 578,917.50 and 133,256.04

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Solution

The fourth proportional to 386,039.88, 578,917.50 and 133,256.04 is: 199,834.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,039.88 : 578,917.50 = 133,256.04 : x
  2. Step 2: Convert to fraction form
    386,039.88/578,917.50 = 133,256.04/x
  3. Step 3: Cross multiply
    386,039.88x = 578,917.50 × 133,256.04
  4. Step 4: Simplify right side
    386,039.88x = 77,144,253,536.70
  5. Step 5: Solve for x
    x = 77,144,253,536.70/386,039.88
  6. Step 6: Final answer
    x = 199,834.93

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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.