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Finding the Fourth Proportional to 221,664.40, 332,642.40 and 126,894.40

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Solution

The fourth proportional to 221,664.40, 332,642.40 and 126,894.40 is: 190,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,664.40 : 332,642.40 = 126,894.40 : x
  2. Step 2: Convert to fraction form
    221,664.40/332,642.40 = 126,894.40/x
  3. Step 3: Cross multiply
    221,664.40x = 332,642.40 × 126,894.40
  4. Step 4: Simplify right side
    221,664.40x = 42,210,457,762.56
  5. Step 5: Solve for x
    x = 42,210,457,762.56/221,664.40
  6. Step 6: Final answer
    x = 190,425.06

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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.