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Finding the Fourth Proportional to 347,311.05, 520,609.32 and 157,903.17

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Solution

The fourth proportional to 347,311.05, 520,609.32 and 157,903.17 is: 236,692.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,311.05 : 520,609.32 = 157,903.17 : x
  2. Step 2: Convert to fraction form
    347,311.05/520,609.32 = 157,903.17/x
  3. Step 3: Cross multiply
    347,311.05x = 520,609.32 × 157,903.17
  4. Step 4: Simplify right side
    347,311.05x = 82,205,861,959.54
  5. Step 5: Solve for x
    x = 82,205,861,959.54/347,311.05
  6. Step 6: Final answer
    x = 236,692.33

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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.