Home / 221,485.10-332,227.65-81,298.40

Finding the Fourth Proportional to 221,485.10, 332,227.65 and 81,298.40

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Solution

The fourth proportional to 221,485.10, 332,227.65 and 81,298.40 is: 121,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,485.10 : 332,227.65 = 81,298.40 : x
  2. Step 2: Convert to fraction form
    221,485.10/332,227.65 = 81,298.40/x
  3. Step 3: Cross multiply
    221,485.10x = 332,227.65 × 81,298.40
  4. Step 4: Simplify right side
    221,485.10x = 27,009,576,380.76
  5. Step 5: Solve for x
    x = 27,009,576,380.76/221,485.10
  6. Step 6: Final answer
    x = 121,947.60

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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.