Home / 379,147.78-522,983.63-288,304.59

Finding the Fourth Proportional to 379,147.78, 522,983.63 and 288,304.59

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Solution

The fourth proportional to 379,147.78, 522,983.63 and 288,304.59 is: 397,677.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,147.78 : 522,983.63 = 288,304.59 : x
  2. Step 2: Convert to fraction form
    379,147.78/522,983.63 = 288,304.59/x
  3. Step 3: Cross multiply
    379,147.78x = 522,983.63 × 288,304.59
  4. Step 4: Simplify right side
    379,147.78x = 150,778,581,744.62
  5. Step 5: Solve for x
    x = 150,778,581,744.62/379,147.78
  6. Step 6: Final answer
    x = 397,677.61

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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.