Home / 345,195.03-517,863.15-145,515.45

Finding the Fourth Proportional to 345,195.03, 517,863.15 and 145,515.45

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Solution

The fourth proportional to 345,195.03, 517,863.15 and 145,515.45 is: 218,302.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,195.03 : 517,863.15 = 145,515.45 : x
  2. Step 2: Convert to fraction form
    345,195.03/517,863.15 = 145,515.45/x
  3. Step 3: Cross multiply
    345,195.03x = 517,863.15 × 145,515.45
  4. Step 4: Simplify right side
    345,195.03x = 75,357,089,310.67
  5. Step 5: Solve for x
    x = 75,357,089,310.67/345,195.03
  6. Step 6: Final answer
    x = 218,302.94

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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.