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Finding the Fourth Proportional to 388,240.38, 582,385.68 and 122,012.01

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Solution

The fourth proportional to 388,240.38, 582,385.68 and 122,012.01 is: 183,025.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,240.38 : 582,385.68 = 122,012.01 : x
  2. Step 2: Convert to fraction form
    388,240.38/582,385.68 = 122,012.01/x
  3. Step 3: Cross multiply
    388,240.38x = 582,385.68 × 122,012.01
  4. Step 4: Simplify right side
    388,240.38x = 71,058,047,412.02
  5. Step 5: Solve for x
    x = 71,058,047,412.02/388,240.38
  6. Step 6: Final answer
    x = 183,025.91

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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.