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Finding the Fourth Proportional to 388,525.48, 582,891.93 and 139,232.68

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Solution

The fourth proportional to 388,525.48, 582,891.93 and 139,232.68 is: 208,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,525.48 : 582,891.93 = 139,232.68 : x
  2. Step 2: Convert to fraction form
    388,525.48/582,891.93 = 139,232.68/x
  3. Step 3: Cross multiply
    388,525.48x = 582,891.93 × 139,232.68
  4. Step 4: Simplify right side
    388,525.48x = 81,157,605,564.27
  5. Step 5: Solve for x
    x = 81,157,605,564.27/388,525.48
  6. Step 6: Final answer
    x = 208,886.19

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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.