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Finding the Fourth Proportional to 263,987.60, 395,443.80 and 163,840.40

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Solution

The fourth proportional to 263,987.60, 395,443.80 and 163,840.40 is: 245,426.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,987.60 : 395,443.80 = 163,840.40 : x
  2. Step 2: Convert to fraction form
    263,987.60/395,443.80 = 163,840.40/x
  3. Step 3: Cross multiply
    263,987.60x = 395,443.80 × 163,840.40
  4. Step 4: Simplify right side
    263,987.60x = 64,789,670,369.52
  5. Step 5: Solve for x
    x = 64,789,670,369.52/263,987.60
  6. Step 6: Final answer
    x = 245,426.95

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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.