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Finding the Fourth Proportional to 485,854.13, 670,476.96 and 270,994.03

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Solution

The fourth proportional to 485,854.13, 670,476.96 and 270,994.03 is: 373,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,854.13 : 670,476.96 = 270,994.03 : x
  2. Step 2: Convert to fraction form
    485,854.13/670,476.96 = 270,994.03/x
  3. Step 3: Cross multiply
    485,854.13x = 670,476.96 × 270,994.03
  4. Step 4: Simplify right side
    485,854.13x = 181,695,251,736.36
  5. Step 5: Solve for x
    x = 181,695,251,736.36/485,854.13
  6. Step 6: Final answer
    x = 373,970.79

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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.