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Finding the Fourth Proportional to 214,978.80, 322,468.98 and 65,220.36

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Solution

The fourth proportional to 214,978.80, 322,468.98 and 65,220.36 is: 97,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,978.80 : 322,468.98 = 65,220.36 : x
  2. Step 2: Convert to fraction form
    214,978.80/322,468.98 = 65,220.36/x
  3. Step 3: Cross multiply
    214,978.80x = 322,468.98 × 65,220.36
  4. Step 4: Simplify right side
    214,978.80x = 21,031,542,964.43
  5. Step 5: Solve for x
    x = 21,031,542,964.43/214,978.80
  6. Step 6: Final answer
    x = 97,830.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.