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Finding the Fourth Proportional to 353,814.20, 530,753.70 and 143,408.60

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Solution

The fourth proportional to 353,814.20, 530,753.70 and 143,408.60 is: 215,126.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,814.20 : 530,753.70 = 143,408.60 : x
  2. Step 2: Convert to fraction form
    353,814.20/530,753.70 = 143,408.60/x
  3. Step 3: Cross multiply
    353,814.20x = 530,753.70 × 143,408.60
  4. Step 4: Simplify right side
    353,814.20x = 76,114,645,061.82
  5. Step 5: Solve for x
    x = 76,114,645,061.82/353,814.20
  6. Step 6: Final answer
    x = 215,126.03

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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.