Home / 353,786.20-530,744.10-143,445.40

Finding the Fourth Proportional to 353,786.20, 530,744.10 and 143,445.40

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Solution

The fourth proportional to 353,786.20, 530,744.10 and 143,445.40 is: 215,194.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,786.20 : 530,744.10 = 143,445.40 : x
  2. Step 2: Convert to fraction form
    353,786.20/530,744.10 = 143,445.40/x
  3. Step 3: Cross multiply
    353,786.20x = 530,744.10 × 143,445.40
  4. Step 4: Simplify right side
    353,786.20x = 76,132,799,722.14
  5. Step 5: Solve for x
    x = 76,132,799,722.14/353,786.20
  6. Step 6: Final answer
    x = 215,194.37

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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.