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Finding the Fourth Proportional to 268,101.59, 402,152.15 and 68,421.96

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Solution

The fourth proportional to 268,101.59, 402,152.15 and 68,421.96 is: 102,632.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,101.59 : 402,152.15 = 68,421.96 : x
  2. Step 2: Convert to fraction form
    268,101.59/402,152.15 = 68,421.96/x
  3. Step 3: Cross multiply
    268,101.59x = 402,152.15 × 68,421.96
  4. Step 4: Simplify right side
    268,101.59x = 27,516,038,321.21
  5. Step 5: Solve for x
    x = 27,516,038,321.21/268,101.59
  6. Step 6: Final answer
    x = 102,632.88

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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.