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Finding the Fourth Proportional to 372,816.30, 559,317.60 and 120,120.60

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Solution

The fourth proportional to 372,816.30, 559,317.60 and 120,120.60 is: 180,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,816.30 : 559,317.60 = 120,120.60 : x
  2. Step 2: Convert to fraction form
    372,816.30/559,317.60 = 120,120.60/x
  3. Step 3: Cross multiply
    372,816.30x = 559,317.60 × 120,120.60
  4. Step 4: Simplify right side
    372,816.30x = 67,185,565,702.56
  5. Step 5: Solve for x
    x = 67,185,565,702.56/372,816.30
  6. Step 6: Final answer
    x = 180,210.91

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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.