Home / 279,228,955.38-385,377,850.37-212,137,510.05

Finding the Fourth Proportional to 279,228,955.38, 385,377,850.37 and 212,137,510.05

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Solution

The fourth proportional to 279,228,955.38, 385,377,850.37 and 212,137,510.05 is: 292,781,590.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,228,955.38 : 385,377,850.37 = 212,137,510.05 : x
  2. Step 2: Convert to fraction form
    279,228,955.38/385,377,850.37 = 212,137,510.05/x
  3. Step 3: Cross multiply
    279,228,955.38x = 385,377,850.37 × 212,137,510.05
  4. Step 4: Simplify right side
    279,228,955.38x = 81,753,097,605,913,280
  5. Step 5: Solve for x
    x = 81,753,097,605,913,280/279,228,955.38
  6. Step 6: Final answer
    x = 292,781,590.27

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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.