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Finding the Fourth Proportional to 221,838.80, 332,801.40 and 64,072.40

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Solution

The fourth proportional to 221,838.80, 332,801.40 and 64,072.40 is: 96,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,838.80 : 332,801.40 = 64,072.40 : x
  2. Step 2: Convert to fraction form
    221,838.80/332,801.40 = 64,072.40/x
  3. Step 3: Cross multiply
    221,838.80x = 332,801.40 × 64,072.40
  4. Step 4: Simplify right side
    221,838.80x = 21,323,384,421.36
  5. Step 5: Solve for x
    x = 21,323,384,421.36/221,838.80
  6. Step 6: Final answer
    x = 96,121.08

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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.