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Finding the Fourth Proportional to 263,368.80, 395,344.80 and 163,641.60

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Solution

The fourth proportional to 263,368.80, 395,344.80 and 163,641.60 is: 245,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,368.80 : 395,344.80 = 163,641.60 : x
  2. Step 2: Convert to fraction form
    263,368.80/395,344.80 = 163,641.60/x
  3. Step 3: Cross multiply
    263,368.80x = 395,344.80 × 163,641.60
  4. Step 4: Simplify right side
    263,368.80x = 64,694,855,623.68
  5. Step 5: Solve for x
    x = 64,694,855,623.68/263,368.80
  6. Step 6: Final answer
    x = 245,643.58

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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.