Home / 393,381,331.20-590,071,996.80-211,982,803.20

Finding the Fourth Proportional to 393,381,331.20, 590,071,996.80 and 211,982,803.20

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Solution

The fourth proportional to 393,381,331.20, 590,071,996.80 and 211,982,803.20 is: 317,974,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,381,331.20 : 590,071,996.80 = 211,982,803.20 : x
  2. Step 2: Convert to fraction form
    393,381,331.20/590,071,996.80 = 211,982,803.20/x
  3. Step 3: Cross multiply
    393,381,331.20x = 590,071,996.80 × 211,982,803.20
  4. Step 4: Simplify right side
    393,381,331.20x = 125,085,115,971,485,408
  5. Step 5: Solve for x
    x = 125,085,115,971,485,408/393,381,331.20
  6. Step 6: Final answer
    x = 317,974,204.80

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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.