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Finding the Fourth Proportional to 485,480.05, 669,991.31 and 270,619.45

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Solution

The fourth proportional to 485,480.05, 669,991.31 and 270,619.45 is: 373,470.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,480.05 : 669,991.31 = 270,619.45 : x
  2. Step 2: Convert to fraction form
    485,480.05/669,991.31 = 270,619.45/x
  3. Step 3: Cross multiply
    485,480.05x = 669,991.31 × 270,619.45
  4. Step 4: Simplify right side
    485,480.05x = 181,312,679,816.98
  5. Step 5: Solve for x
    x = 181,312,679,816.98/485,480.05
  6. Step 6: Final answer
    x = 373,470.92

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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.