Home / 387,130.45-580,563.27-147,186.49

Finding the Fourth Proportional to 387,130.45, 580,563.27 and 147,186.49

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Solution

The fourth proportional to 387,130.45, 580,563.27 and 147,186.49 is: 220,729.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,130.45 : 580,563.27 = 147,186.49 : x
  2. Step 2: Convert to fraction form
    387,130.45/580,563.27 = 147,186.49/x
  3. Step 3: Cross multiply
    387,130.45x = 580,563.27 × 147,186.49
  4. Step 4: Simplify right side
    387,130.45x = 85,451,069,934.22
  5. Step 5: Solve for x
    x = 85,451,069,934.22/387,130.45
  6. Step 6: Final answer
    x = 220,729.39

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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.