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Finding the Fourth Proportional to 221,395.98, 305,495.64 and 125,892.12

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Solution

The fourth proportional to 221,395.98, 305,495.64 and 125,892.12 is: 173,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,395.98 : 305,495.64 = 125,892.12 : x
  2. Step 2: Convert to fraction form
    221,395.98/305,495.64 = 125,892.12/x
  3. Step 3: Cross multiply
    221,395.98x = 305,495.64 × 125,892.12
  4. Step 4: Simplify right side
    221,395.98x = 38,459,493,770.36
  5. Step 5: Solve for x
    x = 38,459,493,770.36/221,395.98
  6. Step 6: Final answer
    x = 173,713.60

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1.5x scale

Why These Related Problems?

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