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Finding the Fourth Proportional to 219,197.72, 328,770.84 and 61,438.88

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Solution

The fourth proportional to 219,197.72, 328,770.84 and 61,438.88 is: 92,151.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,197.72 : 328,770.84 = 61,438.88 : x
  2. Step 2: Convert to fraction form
    219,197.72/328,770.84 = 61,438.88/x
  3. Step 3: Cross multiply
    219,197.72x = 328,770.84 × 61,438.88
  4. Step 4: Simplify right side
    219,197.72x = 20,199,312,186.26
  5. Step 5: Solve for x
    x = 20,199,312,186.26/219,197.72
  6. Step 6: Final answer
    x = 92,151.11

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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.