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Finding the Fourth Proportional to 620,929.60, 931,556.40 and 200,215.60

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Solution

The fourth proportional to 620,929.60, 931,556.40 and 200,215.60 is: 300,375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,929.60 : 931,556.40 = 200,215.60 : x
  2. Step 2: Convert to fraction form
    620,929.60/931,556.40 = 200,215.60/x
  3. Step 3: Cross multiply
    620,929.60x = 931,556.40 × 200,215.60
  4. Step 4: Simplify right side
    620,929.60x = 186,512,123,559.84
  5. Step 5: Solve for x
    x = 186,512,123,559.84/620,929.60
  6. Step 6: Final answer
    x = 300,375.64

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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.