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Finding the Fourth Proportional to 221,270,090.40, 309,173,464.80 and 221,270,090.40

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Solution

The fourth proportional to 221,270,090.40, 309,173,464.80 and 221,270,090.40 is: 309,173,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,270,090.40 : 309,173,464.80 = 221,270,090.40 : x
  2. Step 2: Convert to fraction form
    221,270,090.40/309,173,464.80 = 221,270,090.40/x
  3. Step 3: Cross multiply
    221,270,090.40x = 309,173,464.80 × 221,270,090.40
  4. Step 4: Simplify right side
    221,270,090.40x = 68,410,840,505,577,224
  5. Step 5: Solve for x
    x = 68,410,840,505,577,224/221,270,090.40
  6. Step 6: Final answer
    x = 309,173,464.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.