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Finding the Fourth Proportional to 242,643,400, 363,965,100 and 81,085,336

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Solution

The fourth proportional to 242,643,400, 363,965,100 and 81,085,336 is: 121,628,004

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,643,400 : 363,965,100 = 81,085,336 : x
  2. Step 2: Convert to fraction form
    242,643,400/363,965,100 = 81,085,336/x
  3. Step 3: Cross multiply
    242,643,400x = 363,965,100 × 81,085,336
  4. Step 4: Simplify right side
    242,643,400x = 29,512,232,425,773,600
  5. Step 5: Solve for x
    x = 29,512,232,425,773,600/242,643,400
  6. Step 6: Final answer
    x = 121,628,004

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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.