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Finding the Fourth Proportional to 219,418.32, 329,059.44 and 79,158.72

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Solution

The fourth proportional to 219,418.32, 329,059.44 and 79,158.72 is: 118,713.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,418.32 : 329,059.44 = 79,158.72 : x
  2. Step 2: Convert to fraction form
    219,418.32/329,059.44 = 79,158.72/x
  3. Step 3: Cross multiply
    219,418.32x = 329,059.44 × 79,158.72
  4. Step 4: Simplify right side
    219,418.32x = 26,047,924,074.32
  5. Step 5: Solve for x
    x = 26,047,924,074.32/219,418.32
  6. Step 6: Final answer
    x = 118,713.53

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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.