Home / 388,098.39-582,172.20-121,869.39

Finding the Fourth Proportional to 388,098.39, 582,172.20 and 121,869.39

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Solution

The fourth proportional to 388,098.39, 582,172.20 and 121,869.39 is: 182,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,098.39 : 582,172.20 = 121,869.39 : x
  2. Step 2: Convert to fraction form
    388,098.39/582,172.20 = 121,869.39/x
  3. Step 3: Cross multiply
    388,098.39x = 582,172.20 × 121,869.39
  4. Step 4: Simplify right side
    388,098.39x = 70,948,970,888.96
  5. Step 5: Solve for x
    x = 70,948,970,888.96/388,098.39
  6. Step 6: Final answer
    x = 182,811.81

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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.