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Finding the Fourth Proportional to 223,413.60, 312,079.20 and 223,413.60

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Solution

The fourth proportional to 223,413.60, 312,079.20 and 223,413.60 is: 312,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,413.60 : 312,079.20 = 223,413.60 : x
  2. Step 2: Convert to fraction form
    223,413.60/312,079.20 = 223,413.60/x
  3. Step 3: Cross multiply
    223,413.60x = 312,079.20 × 223,413.60
  4. Step 4: Simplify right side
    223,413.60x = 69,722,737,557.12
  5. Step 5: Solve for x
    x = 69,722,737,557.12/223,413.60
  6. Step 6: Final answer
    x = 312,079.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.