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Finding the Fourth Proportional to 352,023.40, 528,035.10 and 212,055.40

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Solution

The fourth proportional to 352,023.40, 528,035.10 and 212,055.40 is: 318,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,023.40 : 528,035.10 = 212,055.40 : x
  2. Step 2: Convert to fraction form
    352,023.40/528,035.10 = 212,055.40/x
  3. Step 3: Cross multiply
    352,023.40x = 528,035.10 × 212,055.40
  4. Step 4: Simplify right side
    352,023.40x = 111,972,694,344.54
  5. Step 5: Solve for x
    x = 111,972,694,344.54/352,023.40
  6. Step 6: Final answer
    x = 318,083.10

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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.