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Finding the Fourth Proportional to 620,604.80, 931,166.40 and 200,009.60

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Solution

The fourth proportional to 620,604.80, 931,166.40 and 200,009.60 is: 300,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,604.80 : 931,166.40 = 200,009.60 : x
  2. Step 2: Convert to fraction form
    620,604.80/931,166.40 = 200,009.60/x
  3. Step 3: Cross multiply
    620,604.80x = 931,166.40 × 200,009.60
  4. Step 4: Simplify right side
    620,604.80x = 186,242,219,197.44
  5. Step 5: Solve for x
    x = 186,242,219,197.44/620,604.80
  6. Step 6: Final answer
    x = 300,097.94

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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.