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Finding the Fourth Proportional to 441,503.04, 609,287.22 and 312,672

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Solution

The fourth proportional to 441,503.04, 609,287.22 and 312,672 is: 431,496.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,503.04 : 609,287.22 = 312,672 : x
  2. Step 2: Convert to fraction form
    441,503.04/609,287.22 = 312,672/x
  3. Step 3: Cross multiply
    441,503.04x = 609,287.22 × 312,672
  4. Step 4: Simplify right side
    441,503.04x = 190,507,053,651.84
  5. Step 5: Solve for x
    x = 190,507,053,651.84/441,503.04
  6. Step 6: Final answer
    x = 431,496.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.