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Finding the Fourth Proportional to 366,942.40, 550,413.60 and 260,654.20

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Solution

The fourth proportional to 366,942.40, 550,413.60 and 260,654.20 is: 390,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,942.40 : 550,413.60 = 260,654.20 : x
  2. Step 2: Convert to fraction form
    366,942.40/550,413.60 = 260,654.20/x
  3. Step 3: Cross multiply
    366,942.40x = 550,413.60 × 260,654.20
  4. Step 4: Simplify right side
    366,942.40x = 143,467,616,577.12
  5. Step 5: Solve for x
    x = 143,467,616,577.12/366,942.40
  6. Step 6: Final answer
    x = 390,981.30

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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.