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Finding the Fourth Proportional to 145,272.68, 217,784.20 and 50,490.55

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Solution

The fourth proportional to 145,272.68, 217,784.20 and 50,490.55 is: 75,692.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,272.68 : 217,784.20 = 50,490.55 : x
  2. Step 2: Convert to fraction form
    145,272.68/217,784.20 = 50,490.55/x
  3. Step 3: Cross multiply
    145,272.68x = 217,784.20 × 50,490.55
  4. Step 4: Simplify right side
    145,272.68x = 10,996,043,368.62
  5. Step 5: Solve for x
    x = 10,996,043,368.62/145,272.68
  6. Step 6: Final answer
    x = 75,692.44

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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.