Home / 387,456.85-581,152.26-134,672.45

Finding the Fourth Proportional to 387,456.85, 581,152.26 and 134,672.45

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Solution

The fourth proportional to 387,456.85, 581,152.26 and 134,672.45 is: 201,997.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,456.85 : 581,152.26 = 134,672.45 : x
  2. Step 2: Convert to fraction form
    387,456.85/581,152.26 = 134,672.45/x
  3. Step 3: Cross multiply
    387,456.85x = 581,152.26 × 134,672.45
  4. Step 4: Simplify right side
    387,456.85x = 78,265,198,677.24
  5. Step 5: Solve for x
    x = 78,265,198,677.24/387,456.85
  6. Step 6: Final answer
    x = 201,997.20

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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.