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Finding the Fourth Proportional to 268,598.08, 402,906.08 and 81,608.96

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Solution

The fourth proportional to 268,598.08, 402,906.08 and 81,608.96 is: 122,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,598.08 : 402,906.08 = 81,608.96 : x
  2. Step 2: Convert to fraction form
    268,598.08/402,906.08 = 81,608.96/x
  3. Step 3: Cross multiply
    268,598.08x = 402,906.08 × 81,608.96
  4. Step 4: Simplify right side
    268,598.08x = 32,880,746,166.48
  5. Step 5: Solve for x
    x = 32,880,746,166.48/268,598.08
  6. Step 6: Final answer
    x = 122,416.16

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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.