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Finding the Fourth Proportional to 215,692.28, 323,539.22 and 65,931.99

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Solution

The fourth proportional to 215,692.28, 323,539.22 and 65,931.99 is: 98,898.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,692.28 : 323,539.22 = 65,931.99 : x
  2. Step 2: Convert to fraction form
    215,692.28/323,539.22 = 65,931.99/x
  3. Step 3: Cross multiply
    215,692.28x = 323,539.22 × 65,931.99
  4. Step 4: Simplify right side
    215,692.28x = 21,331,583,479.14
  5. Step 5: Solve for x
    x = 21,331,583,479.14/215,692.28
  6. Step 6: Final answer
    x = 98,898.22

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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.