Home / 212,310,530.30-318,465,795.45-68,703,362.30

Finding the Fourth Proportional to 212,310,530.30, 318,465,795.45 and 68,703,362.30

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Solution

The fourth proportional to 212,310,530.30, 318,465,795.45 and 68,703,362.30 is: 103,055,043.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,310,530.30 : 318,465,795.45 = 68,703,362.30 : x
  2. Step 2: Convert to fraction form
    212,310,530.30/318,465,795.45 = 68,703,362.30/x
  3. Step 3: Cross multiply
    212,310,530.30x = 318,465,795.45 × 68,703,362.30
  4. Step 4: Simplify right side
    212,310,530.30x = 21,879,670,924,959,040
  5. Step 5: Solve for x
    x = 21,879,670,924,959,040/212,310,530.30
  6. Step 6: Final answer
    x = 103,055,043.45

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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.