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Finding the Fourth Proportional to 221,059.00, 305,061.36 and 120,457.00

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Solution

The fourth proportional to 221,059.00, 305,061.36 and 120,457.00 is: 166,230.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,059.00 : 305,061.36 = 120,457.00 : x
  2. Step 2: Convert to fraction form
    221,059.00/305,061.36 = 120,457.00/x
  3. Step 3: Cross multiply
    221,059.00x = 305,061.36 × 120,457.00
  4. Step 4: Simplify right side
    221,059.00x = 36,746,775,478.87
  5. Step 5: Solve for x
    x = 36,746,775,478.87/221,059.00
  6. Step 6: Final answer
    x = 166,230.63

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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.