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Finding the Fourth Proportional to 388,652.17, 582,999.12 and 122,433.52

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Solution

The fourth proportional to 388,652.17, 582,999.12 and 122,433.52 is: 183,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,652.17 : 582,999.12 = 122,433.52 : x
  2. Step 2: Convert to fraction form
    388,652.17/582,999.12 = 122,433.52/x
  3. Step 3: Cross multiply
    388,652.17x = 582,999.12 × 122,433.52
  4. Step 4: Simplify right side
    388,652.17x = 71,378,630,891.34
  5. Step 5: Solve for x
    x = 71,378,630,891.34/388,652.17
  6. Step 6: Final answer
    x = 183,656.85

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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.