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Finding the Fourth Proportional to 392,692.18, 589,249.68 and 156,037

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Solution

The fourth proportional to 392,692.18, 589,249.68 and 156,037 is: 234,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,692.18 : 589,249.68 = 156,037 : x
  2. Step 2: Convert to fraction form
    392,692.18/589,249.68 = 156,037/x
  3. Step 3: Cross multiply
    392,692.18x = 589,249.68 × 156,037
  4. Step 4: Simplify right side
    392,692.18x = 91,944,752,318.16
  5. Step 5: Solve for x
    x = 91,944,752,318.16/392,692.18
  6. Step 6: Final answer
    x = 234,139.50

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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.