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Finding the Fourth Proportional to 295,376.20, 443,064.30 and 137,620.60

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Solution

The fourth proportional to 295,376.20, 443,064.30 and 137,620.60 is: 206,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,376.20 : 443,064.30 = 137,620.60 : x
  2. Step 2: Convert to fraction form
    295,376.20/443,064.30 = 137,620.60/x
  3. Step 3: Cross multiply
    295,376.20x = 443,064.30 × 137,620.60
  4. Step 4: Simplify right side
    295,376.20x = 60,974,774,804.58
  5. Step 5: Solve for x
    x = 60,974,774,804.58/295,376.20
  6. Step 6: Final answer
    x = 206,430.90

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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.