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Finding the Fourth Proportional to 221,295.40, 332,040.30 and 102,905.80

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Solution

The fourth proportional to 221,295.40, 332,040.30 and 102,905.80 is: 154,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,295.40 : 332,040.30 = 102,905.80 : x
  2. Step 2: Convert to fraction form
    221,295.40/332,040.30 = 102,905.80/x
  3. Step 3: Cross multiply
    221,295.40x = 332,040.30 × 102,905.80
  4. Step 4: Simplify right side
    221,295.40x = 34,168,872,703.74
  5. Step 5: Solve for x
    x = 34,168,872,703.74/221,295.40
  6. Step 6: Final answer
    x = 154,403.90

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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.