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Finding the Fourth Proportional to 485,053.20, 669,393.99 and 270,193.32

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Solution

The fourth proportional to 485,053.20, 669,393.99 and 270,193.32 is: 372,878.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,053.20 : 669,393.99 = 270,193.32 : x
  2. Step 2: Convert to fraction form
    485,053.20/669,393.99 = 270,193.32/x
  3. Step 3: Cross multiply
    485,053.20x = 669,393.99 × 270,193.32
  4. Step 4: Simplify right side
    485,053.20x = 180,865,784,546.15
  5. Step 5: Solve for x
    x = 180,865,784,546.15/485,053.20
  6. Step 6: Final answer
    x = 372,878.24

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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.