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Finding the Fourth Proportional to 388,150.76, 582,669 and 260,162.06

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Solution

The fourth proportional to 388,150.76, 582,669 and 260,162.06 is: 390,539.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,150.76 : 582,669 = 260,162.06 : x
  2. Step 2: Convert to fraction form
    388,150.76/582,669 = 260,162.06/x
  3. Step 3: Cross multiply
    388,150.76x = 582,669 × 260,162.06
  4. Step 4: Simplify right side
    388,150.76x = 151,588,367,338.14
  5. Step 5: Solve for x
    x = 151,588,367,338.14/388,150.76
  6. Step 6: Final answer
    x = 390,539.92

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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.