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Finding the Fourth Proportional to 615,693,997.85, 923,540,995.76 and 155,632,167.36

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Solution

The fourth proportional to 615,693,997.85, 923,540,995.76 and 155,632,167.36 is: 233,448,250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,693,997.85 : 923,540,995.76 = 155,632,167.36 : x
  2. Step 2: Convert to fraction form
    615,693,997.85/923,540,995.76 = 155,632,167.36/x
  3. Step 3: Cross multiply
    615,693,997.85x = 923,540,995.76 × 155,632,167.36
  4. Step 4: Simplify right side
    615,693,997.85x = 143,732,686,815,163,216
  5. Step 5: Solve for x
    x = 143,732,686,815,163,216/615,693,997.85
  6. Step 6: Final answer
    x = 233,448,250.78

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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.