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Finding the Fourth Proportional to 485,855.64, 670,479.03 and 270,995.54

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Solution

The fourth proportional to 485,855.64, 670,479.03 and 270,995.54 is: 373,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,855.64 : 670,479.03 = 270,995.54 : x
  2. Step 2: Convert to fraction form
    485,855.64/670,479.03 = 270,995.54/x
  3. Step 3: Cross multiply
    485,855.64x = 670,479.03 × 270,995.54
  4. Step 4: Simplify right side
    485,855.64x = 181,696,823,441.13
  5. Step 5: Solve for x
    x = 181,696,823,441.13/485,855.64
  6. Step 6: Final answer
    x = 373,972.86

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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.