Home / 388,446,171.85-536,049,461.23-212,230,383.49

Finding the Fourth Proportional to 388,446,171.85, 536,049,461.23 and 212,230,383.49

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Solution

The fourth proportional to 388,446,171.85, 536,049,461.23 and 212,230,383.49 is: 292,874,511.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,446,171.85 : 536,049,461.23 = 212,230,383.49 : x
  2. Step 2: Convert to fraction form
    388,446,171.85/536,049,461.23 = 212,230,383.49/x
  3. Step 3: Cross multiply
    388,446,171.85x = 536,049,461.23 × 212,230,383.49
  4. Step 4: Simplify right side
    388,446,171.85x = 113,765,982,727,783,024
  5. Step 5: Solve for x
    x = 113,765,982,727,783,024/388,446,171.85
  6. Step 6: Final answer
    x = 292,874,511.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.