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Finding the Fourth Proportional to 444,969.60, 667,646.40 and 258,140.80

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Solution

The fourth proportional to 444,969.60, 667,646.40 and 258,140.80 is: 387,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,969.60 : 667,646.40 = 258,140.80 : x
  2. Step 2: Convert to fraction form
    444,969.60/667,646.40 = 258,140.80/x
  3. Step 3: Cross multiply
    444,969.60x = 667,646.40 × 258,140.80
  4. Step 4: Simplify right side
    444,969.60x = 172,346,775,813.12
  5. Step 5: Solve for x
    x = 172,346,775,813.12/444,969.60
  6. Step 6: Final answer
    x = 387,322.59

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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.