Home / 388,517.98-582,880.65-139,225.18

Finding the Fourth Proportional to 388,517.98, 582,880.65 and 139,225.18

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Solution

The fourth proportional to 388,517.98, 582,880.65 and 139,225.18 is: 208,874.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,517.98 : 582,880.65 = 139,225.18 : x
  2. Step 2: Convert to fraction form
    388,517.98/582,880.65 = 139,225.18/x
  3. Step 3: Cross multiply
    388,517.98x = 582,880.65 × 139,225.18
  4. Step 4: Simplify right side
    388,517.98x = 81,151,663,414.77
  5. Step 5: Solve for x
    x = 81,151,663,414.77/388,517.98
  6. Step 6: Final answer
    x = 208,874.92

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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.