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Finding the Fourth Proportional to 620,636.68, 931,027.93 and 221,334.22

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Solution

The fourth proportional to 620,636.68, 931,027.93 and 221,334.22 is: 332,027.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,636.68 : 931,027.93 = 221,334.22 : x
  2. Step 2: Convert to fraction form
    620,636.68/931,027.93 = 221,334.22/x
  3. Step 3: Cross multiply
    620,636.68x = 931,027.93 × 221,334.22
  4. Step 4: Simplify right side
    620,636.68x = 206,068,340,684.77
  5. Step 5: Solve for x
    x = 206,068,340,684.77/620,636.68
  6. Step 6: Final answer
    x = 332,027.33

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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.