Home / 345,289.56-517,539.06-145,310.28

Finding the Fourth Proportional to 345,289.56, 517,539.06 and 145,310.28

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Solution

The fourth proportional to 345,289.56, 517,539.06 and 145,310.28 is: 217,799.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,289.56 : 517,539.06 = 145,310.28 : x
  2. Step 2: Convert to fraction form
    345,289.56/517,539.06 = 145,310.28/x
  3. Step 3: Cross multiply
    345,289.56x = 517,539.06 × 145,310.28
  4. Step 4: Simplify right side
    345,289.56x = 75,203,745,719.54
  5. Step 5: Solve for x
    x = 75,203,745,719.54/345,289.56
  6. Step 6: Final answer
    x = 217,799.07

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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.