Home / 387,486.45-581,240.58-107,003.70

Finding the Fourth Proportional to 387,486.45, 581,240.58 and 107,003.70

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Solution

The fourth proportional to 387,486.45, 581,240.58 and 107,003.70 is: 160,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,486.45 : 581,240.58 = 107,003.70 : x
  2. Step 2: Convert to fraction form
    387,486.45/581,240.58 = 107,003.70/x
  3. Step 3: Cross multiply
    387,486.45x = 581,240.58 × 107,003.70
  4. Step 4: Simplify right side
    387,486.45x = 62,194,892,650.15
  5. Step 5: Solve for x
    x = 62,194,892,650.15/387,486.45
  6. Step 6: Final answer
    x = 160,508.56

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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.