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Finding the Fourth Proportional to 219,211.76, 328,791.80 and 61,452.88

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Solution

The fourth proportional to 219,211.76, 328,791.80 and 61,452.88 is: 92,172.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,211.76 : 328,791.80 = 61,452.88 : x
  2. Step 2: Convert to fraction form
    219,211.76/328,791.80 = 61,452.88/x
  3. Step 3: Cross multiply
    219,211.76x = 328,791.80 × 61,452.88
  4. Step 4: Simplify right side
    219,211.76x = 20,205,203,030.38
  5. Step 5: Solve for x
    x = 20,205,203,030.38/219,211.76
  6. Step 6: Final answer
    x = 92,172.08

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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.