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Finding the Fourth Proportional to 265,704.04, 398,478.30 and 218,840.68

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Solution

The fourth proportional to 265,704.04, 398,478.30 and 218,840.68 is: 328,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,704.04 : 398,478.30 = 218,840.68 : x
  2. Step 2: Convert to fraction form
    265,704.04/398,478.30 = 218,840.68/x
  3. Step 3: Cross multiply
    265,704.04x = 398,478.30 × 218,840.68
  4. Step 4: Simplify right side
    265,704.04x = 87,203,262,137.24
  5. Step 5: Solve for x
    x = 87,203,262,137.24/265,704.04
  6. Step 6: Final answer
    x = 328,196.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.