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Finding the Fourth Proportional to 221,276,328.40, 331,914,492.60 and 221,276,328.40

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Solution

The fourth proportional to 221,276,328.40, 331,914,492.60 and 221,276,328.40 is: 331,914,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,276,328.40 : 331,914,492.60 = 221,276,328.40 : x
  2. Step 2: Convert to fraction form
    221,276,328.40/331,914,492.60 = 221,276,328.40/x
  3. Step 3: Cross multiply
    221,276,328.40x = 331,914,492.60 × 221,276,328.40
  4. Step 4: Simplify right side
    221,276,328.40x = 73,444,820,265,276,976
  5. Step 5: Solve for x
    x = 73,444,820,265,276,976/221,276,328.40
  6. Step 6: Final answer
    x = 331,914,492.60

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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.