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Finding the Fourth Proportional to 207,014.40, 309,938.40 and 186,019.20

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Solution

The fourth proportional to 207,014.40, 309,938.40 and 186,019.20 is: 278,504.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,014.40 : 309,938.40 = 186,019.20 : x
  2. Step 2: Convert to fraction form
    207,014.40/309,938.40 = 186,019.20/x
  3. Step 3: Cross multiply
    207,014.40x = 309,938.40 × 186,019.20
  4. Step 4: Simplify right side
    207,014.40x = 57,654,493,217.28
  5. Step 5: Solve for x
    x = 57,654,493,217.28/207,014.40
  6. Step 6: Final answer
    x = 278,504.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.