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Finding the Fourth Proportional to 388,509.03, 582,804.05 and 148,622.47

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Solution

The fourth proportional to 388,509.03, 582,804.05 and 148,622.47 is: 222,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,509.03 : 582,804.05 = 148,622.47 : x
  2. Step 2: Convert to fraction form
    388,509.03/582,804.05 = 148,622.47/x
  3. Step 3: Cross multiply
    388,509.03x = 582,804.05 × 148,622.47
  4. Step 4: Simplify right side
    388,509.03x = 86,617,777,437.00
  5. Step 5: Solve for x
    x = 86,617,777,437.00/388,509.03
  6. Step 6: Final answer
    x = 222,949.20

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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.