Home / 345,343.29-518,085.26-145,664.43

Finding the Fourth Proportional to 345,343.29, 518,085.26 and 145,664.43

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Solution

The fourth proportional to 345,343.29, 518,085.26 and 145,664.43 is: 218,526.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,343.29 : 518,085.26 = 145,664.43 : x
  2. Step 2: Convert to fraction form
    345,343.29/518,085.26 = 145,664.43/x
  3. Step 3: Cross multiply
    345,343.29x = 518,085.26 × 145,664.43
  4. Step 4: Simplify right side
    345,343.29x = 75,466,593,360.98
  5. Step 5: Solve for x
    x = 75,466,593,360.98/345,343.29
  6. Step 6: Final answer
    x = 218,526.31

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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.