Home / 387,612.92-581,507.13-134,905.34

Finding the Fourth Proportional to 387,612.92, 581,507.13 and 134,905.34

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Solution

The fourth proportional to 387,612.92, 581,507.13 and 134,905.34 is: 202,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,612.92 : 581,507.13 = 134,905.34 : x
  2. Step 2: Convert to fraction form
    387,612.92/581,507.13 = 134,905.34/x
  3. Step 3: Cross multiply
    387,612.92x = 581,507.13 × 134,905.34
  4. Step 4: Simplify right side
    387,612.92x = 78,448,415,125.41
  5. Step 5: Solve for x
    x = 78,448,415,125.41/387,612.92
  6. Step 6: Final answer
    x = 202,388.55

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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.