Home / 445,039.60-667,751.40-258,210.80

Finding the Fourth Proportional to 445,039.60, 667,751.40 and 258,210.80

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Solution

The fourth proportional to 445,039.60, 667,751.40 and 258,210.80 is: 387,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,039.60 : 667,751.40 = 258,210.80 : x
  2. Step 2: Convert to fraction form
    445,039.60/667,751.40 = 258,210.80/x
  3. Step 3: Cross multiply
    445,039.60x = 667,751.40 × 258,210.80
  4. Step 4: Simplify right side
    445,039.60x = 172,420,623,195.12
  5. Step 5: Solve for x
    x = 172,420,623,195.12/445,039.60
  6. Step 6: Final answer
    x = 387,427.60

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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.