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Finding the Fourth Proportional to 499,057,326.40, 748,636,015.20 and 171,489,697.60

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Solution

The fourth proportional to 499,057,326.40, 748,636,015.20 and 171,489,697.60 is: 257,251,736.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,057,326.40 : 748,636,015.20 = 171,489,697.60 : x
  2. Step 2: Convert to fraction form
    499,057,326.40/748,636,015.20 = 171,489,697.60/x
  3. Step 3: Cross multiply
    499,057,326.40x = 748,636,015.20 × 171,489,697.60
  4. Step 4: Simplify right side
    499,057,326.40x = 128,383,363,859,117,008
  5. Step 5: Solve for x
    x = 128,383,363,859,117,008/499,057,326.40
  6. Step 6: Final answer
    x = 257,251,736.56

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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.