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Finding the Fourth Proportional to 398,610, 550,081.80 and 219,762

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Solution

The fourth proportional to 398,610, 550,081.80 and 219,762 is: 303,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,610 : 550,081.80 = 219,762 : x
  2. Step 2: Convert to fraction form
    398,610/550,081.80 = 219,762/x
  3. Step 3: Cross multiply
    398,610x = 550,081.80 × 219,762
  4. Step 4: Simplify right side
    398,610x = 120,887,076,531.60
  5. Step 5: Solve for x
    x = 120,887,076,531.60/398,610
  6. Step 6: Final answer
    x = 303,271.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.