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Finding the Fourth Proportional to 268,564.79, 402,847.28 and 68,885.16

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Solution

The fourth proportional to 268,564.79, 402,847.28 and 68,885.16 is: 103,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,564.79 : 402,847.28 = 68,885.16 : x
  2. Step 2: Convert to fraction form
    268,564.79/402,847.28 = 68,885.16/x
  3. Step 3: Cross multiply
    268,564.79x = 402,847.28 × 68,885.16
  4. Step 4: Simplify right side
    268,564.79x = 27,750,197,741.58
  5. Step 5: Solve for x
    x = 27,750,197,741.58/268,564.79
  6. Step 6: Final answer
    x = 103,327.76

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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.