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Finding the Fourth Proportional to 478,751.12, 660,673.26 and 263,891.36

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Solution

The fourth proportional to 478,751.12, 660,673.26 and 263,891.36 is: 364,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,751.12 : 660,673.26 = 263,891.36 : x
  2. Step 2: Convert to fraction form
    478,751.12/660,673.26 = 263,891.36/x
  3. Step 3: Cross multiply
    478,751.12x = 660,673.26 × 263,891.36
  4. Step 4: Simplify right side
    478,751.12x = 174,345,965,097.03
  5. Step 5: Solve for x
    x = 174,345,965,097.03/478,751.12
  6. Step 6: Final answer
    x = 364,168.27

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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.