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Finding the Fourth Proportional to 219,375.58, 328,995.32 and 79,115.98

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Solution

The fourth proportional to 219,375.58, 328,995.32 and 79,115.98 is: 118,649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,375.58 : 328,995.32 = 79,115.98 : x
  2. Step 2: Convert to fraction form
    219,375.58/328,995.32 = 79,115.98/x
  3. Step 3: Cross multiply
    219,375.58x = 328,995.32 × 79,115.98
  4. Step 4: Simplify right side
    219,375.58x = 26,028,787,157.21
  5. Step 5: Solve for x
    x = 26,028,787,157.21/219,375.58
  6. Step 6: Final answer
    x = 118,649.43

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1.5x scale

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.