Home / 387,383.98-580,743.17-134,631.63

Finding the Fourth Proportional to 387,383.98, 580,743.17 and 134,631.63

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Solution

The fourth proportional to 387,383.98, 580,743.17 and 134,631.63 is: 201,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,383.98 : 580,743.17 = 134,631.63 : x
  2. Step 2: Convert to fraction form
    387,383.98/580,743.17 = 134,631.63/x
  3. Step 3: Cross multiply
    387,383.98x = 580,743.17 × 134,631.63
  4. Step 4: Simplify right side
    387,383.98x = 78,186,397,786.84
  5. Step 5: Solve for x
    x = 78,186,397,786.84/387,383.98
  6. Step 6: Final answer
    x = 201,831.78

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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.