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Finding the Fourth Proportional to 207,409.60, 310,336.80 and 188,747.20

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Solution

The fourth proportional to 207,409.60, 310,336.80 and 188,747.20 is: 282,413.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,409.60 : 310,336.80 = 188,747.20 : x
  2. Step 2: Convert to fraction form
    207,409.60/310,336.80 = 188,747.20/x
  3. Step 3: Cross multiply
    207,409.60x = 310,336.80 × 188,747.20
  4. Step 4: Simplify right side
    207,409.60x = 58,575,202,056.96
  5. Step 5: Solve for x
    x = 58,575,202,056.96/207,409.60
  6. Step 6: Final answer
    x = 282,413.17

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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.