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Finding the Fourth Proportional to 221,335,384.80, 331,405,880.40 and 221,335,384.80

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Solution

The fourth proportional to 221,335,384.80, 331,405,880.40 and 221,335,384.80 is: 331,405,880.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,335,384.80 : 331,405,880.40 = 221,335,384.80 : x
  2. Step 2: Convert to fraction form
    221,335,384.80/331,405,880.40 = 221,335,384.80/x
  3. Step 3: Cross multiply
    221,335,384.80x = 331,405,880.40 × 221,335,384.80
  4. Step 4: Simplify right side
    221,335,384.80x = 73,351,848,063,316,784
  5. Step 5: Solve for x
    x = 73,351,848,063,316,784/221,335,384.80
  6. Step 6: Final answer
    x = 331,405,880.40

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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.