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Finding the Fourth Proportional to 585,811.20, 878,860.80 and 165,081.60

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Solution

The fourth proportional to 585,811.20, 878,860.80 and 165,081.60 is: 247,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,811.20 : 878,860.80 = 165,081.60 : x
  2. Step 2: Convert to fraction form
    585,811.20/878,860.80 = 165,081.60/x
  3. Step 3: Cross multiply
    585,811.20x = 878,860.80 × 165,081.60
  4. Step 4: Simplify right side
    585,811.20x = 145,083,747,041.28
  5. Step 5: Solve for x
    x = 145,083,747,041.28/585,811.20
  6. Step 6: Final answer
    x = 247,662.98

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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.