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Finding the Fourth Proportional to 221,460.30, 332,190.45 and 215,628.30

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Solution

The fourth proportional to 221,460.30, 332,190.45 and 215,628.30 is: 323,442.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,460.30 : 332,190.45 = 215,628.30 : x
  2. Step 2: Convert to fraction form
    221,460.30/332,190.45 = 215,628.30/x
  3. Step 3: Cross multiply
    221,460.30x = 332,190.45 × 215,628.30
  4. Step 4: Simplify right side
    221,460.30x = 71,629,662,009.74
  5. Step 5: Solve for x
    x = 71,629,662,009.74/221,460.30
  6. Step 6: Final answer
    x = 323,442.45

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1.5x scale

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.