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Finding the Fourth Proportional to 620,750.10, 930,906.45 and 221,403.90

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Solution

The fourth proportional to 620,750.10, 930,906.45 and 221,403.90 is: 332,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,750.10 : 930,906.45 = 221,403.90 : x
  2. Step 2: Convert to fraction form
    620,750.10/930,906.45 = 221,403.90/x
  3. Step 3: Cross multiply
    620,750.10x = 930,906.45 × 221,403.90
  4. Step 4: Simplify right side
    620,750.10x = 206,106,318,565.16
  5. Step 5: Solve for x
    x = 206,106,318,565.16/620,750.10
  6. Step 6: Final answer
    x = 332,027.85

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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.