Home / 345,344.29-518,086.76-145,665.43

Finding the Fourth Proportional to 345,344.29, 518,086.76 and 145,665.43

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Solution

The fourth proportional to 345,344.29, 518,086.76 and 145,665.43 is: 218,527.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,344.29 : 518,086.76 = 145,665.43 : x
  2. Step 2: Convert to fraction form
    345,344.29/518,086.76 = 145,665.43/x
  3. Step 3: Cross multiply
    345,344.29x = 518,086.76 × 145,665.43
  4. Step 4: Simplify right side
    345,344.29x = 75,467,330,672.71
  5. Step 5: Solve for x
    x = 75,467,330,672.71/345,344.29
  6. Step 6: Final answer
    x = 218,527.81

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1.5x scale

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.