Home / 820,352.30-1,230,528.45-221,405.90

Finding the Fourth Proportional to 820,352.30, 1,230,528.45 and 221,405.90

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Solution

The fourth proportional to 820,352.30, 1,230,528.45 and 221,405.90 is: 332,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,352.30 : 1,230,528.45 = 221,405.90 : x
  2. Step 2: Convert to fraction form
    820,352.30/1,230,528.45 = 221,405.90/x
  3. Step 3: Cross multiply
    820,352.30x = 1,230,528.45 × 221,405.90
  4. Step 4: Simplify right side
    820,352.30x = 272,446,258,947.86
  5. Step 5: Solve for x
    x = 272,446,258,947.86/820,352.30
  6. Step 6: Final answer
    x = 332,108.85

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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.