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Finding the Fourth Proportional to 388,485.00, 582,726.68 and 122,268.78

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Solution

The fourth proportional to 388,485.00, 582,726.68 and 122,268.78 is: 183,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,485.00 : 582,726.68 = 122,268.78 : x
  2. Step 2: Convert to fraction form
    388,485.00/582,726.68 = 122,268.78/x
  3. Step 3: Cross multiply
    388,485.00x = 582,726.68 × 122,268.78
  4. Step 4: Simplify right side
    388,485.00x = 71,249,277,323.42
  5. Step 5: Solve for x
    x = 71,249,277,323.42/388,485.00
  6. Step 6: Final answer
    x = 183,402.91

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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.