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Finding the Fourth Proportional to 239,428.60, 359,114.10 and 99,172.60

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Solution

The fourth proportional to 239,428.60, 359,114.10 and 99,172.60 is: 148,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,428.60 : 359,114.10 = 99,172.60 : x
  2. Step 2: Convert to fraction form
    239,428.60/359,114.10 = 99,172.60/x
  3. Step 3: Cross multiply
    239,428.60x = 359,114.10 × 99,172.60
  4. Step 4: Simplify right side
    239,428.60x = 35,614,278,993.66
  5. Step 5: Solve for x
    x = 35,614,278,993.66/239,428.60
  6. Step 6: Final answer
    x = 148,746.97

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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.