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Finding the Fourth Proportional to 485,221.97, 669,597.39 and 270,357.41

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Solution

The fourth proportional to 485,221.97, 669,597.39 and 270,357.41 is: 373,088.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,221.97 : 669,597.39 = 270,357.41 : x
  2. Step 2: Convert to fraction form
    485,221.97/669,597.39 = 270,357.41/x
  3. Step 3: Cross multiply
    485,221.97x = 669,597.39 × 270,357.41
  4. Step 4: Simplify right side
    485,221.97x = 181,030,616,103.16
  5. Step 5: Solve for x
    x = 181,030,616,103.16/485,221.97
  6. Step 6: Final answer
    x = 373,088.25

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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.