Home / 345,110.20-517,255.70-145,430.20

Finding the Fourth Proportional to 345,110.20, 517,255.70 and 145,430.20

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Solution

The fourth proportional to 345,110.20, 517,255.70 and 145,430.20 is: 217,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,110.20 : 517,255.70 = 145,430.20 : x
  2. Step 2: Convert to fraction form
    345,110.20/517,255.70 = 145,430.20/x
  3. Step 3: Cross multiply
    345,110.20x = 517,255.70 × 145,430.20
  4. Step 4: Simplify right side
    345,110.20x = 75,224,599,902.14
  5. Step 5: Solve for x
    x = 75,224,599,902.14/345,110.20
  6. Step 6: Final answer
    x = 217,972.69

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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.