Home / 345,724.61-518,172.80-225,838.53

Finding the Fourth Proportional to 345,724.61, 518,172.80 and 225,838.53

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Solution

The fourth proportional to 345,724.61, 518,172.80 and 225,838.53 is: 338,487.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,724.61 : 518,172.80 = 225,838.53 : x
  2. Step 2: Convert to fraction form
    345,724.61/518,172.80 = 225,838.53/x
  3. Step 3: Cross multiply
    345,724.61x = 518,172.80 × 225,838.53
  4. Step 4: Simplify right side
    345,724.61x = 117,023,382,308.79
  5. Step 5: Solve for x
    x = 117,023,382,308.79/345,724.61
  6. Step 6: Final answer
    x = 338,487.28

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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.