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Finding the Fourth Proportional to 534,413.20, 800,939.40 and 218,513.20

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Solution

The fourth proportional to 534,413.20, 800,939.40 and 218,513.20 is: 327,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,413.20 : 800,939.40 = 218,513.20 : x
  2. Step 2: Convert to fraction form
    534,413.20/800,939.40 = 218,513.20/x
  3. Step 3: Cross multiply
    534,413.20x = 800,939.40 × 218,513.20
  4. Step 4: Simplify right side
    534,413.20x = 175,015,831,300.08
  5. Step 5: Solve for x
    x = 175,015,831,300.08/534,413.20
  6. Step 6: Final answer
    x = 327,491.60

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1.5x scale

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.