Home / 371,098,618.88-512,205,285.44-212,420,725.20

Finding the Fourth Proportional to 371,098,618.88, 512,205,285.44 and 212,420,725.20

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Solution

The fourth proportional to 371,098,618.88, 512,205,285.44 and 212,420,725.20 is: 293,191,654.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,098,618.88 : 512,205,285.44 = 212,420,725.20 : x
  2. Step 2: Convert to fraction form
    371,098,618.88/512,205,285.44 = 212,420,725.20/x
  3. Step 3: Cross multiply
    371,098,618.88x = 512,205,285.44 × 212,420,725.20
  4. Step 4: Simplify right side
    371,098,618.88x = 108,803,018,183,375,696
  5. Step 5: Solve for x
    x = 108,803,018,183,375,696/371,098,618.88
  6. Step 6: Final answer
    x = 293,191,654.86

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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.