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Finding the Fourth Proportional to 268,859.60, 403,289.40 and 71,867.60

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Solution

The fourth proportional to 268,859.60, 403,289.40 and 71,867.60 is: 107,801.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,859.60 : 403,289.40 = 71,867.60 : x
  2. Step 2: Convert to fraction form
    268,859.60/403,289.40 = 71,867.60/x
  3. Step 3: Cross multiply
    268,859.60x = 403,289.40 × 71,867.60
  4. Step 4: Simplify right side
    268,859.60x = 28,983,441,283.44
  5. Step 5: Solve for x
    x = 28,983,441,283.44/268,859.60
  6. Step 6: Final answer
    x = 107,801.40

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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.