Home / 212,310,530.80-318,465,796.20-68,703,362.80

Finding the Fourth Proportional to 212,310,530.80, 318,465,796.20 and 68,703,362.80

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Solution

The fourth proportional to 212,310,530.80, 318,465,796.20 and 68,703,362.80 is: 103,055,044.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,310,530.80 : 318,465,796.20 = 68,703,362.80 : x
  2. Step 2: Convert to fraction form
    212,310,530.80/318,465,796.20 = 68,703,362.80/x
  3. Step 3: Cross multiply
    212,310,530.80x = 318,465,796.20 × 68,703,362.80
  4. Step 4: Simplify right side
    212,310,530.80x = 21,879,671,135,719,460
  5. Step 5: Solve for x
    x = 21,879,671,135,719,460/212,310,530.80
  6. Step 6: Final answer
    x = 103,055,044.20

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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.