Home / 212,176,963.68-318,318,412.80-74,004,556.32

Finding the Fourth Proportional to 212,176,963.68, 318,318,412.80 and 74,004,556.32

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Solution

The fourth proportional to 212,176,963.68, 318,318,412.80 and 74,004,556.32 is: 111,025,308.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,176,963.68 : 318,318,412.80 = 74,004,556.32 : x
  2. Step 2: Convert to fraction form
    212,176,963.68/318,318,412.80 = 74,004,556.32/x
  3. Step 3: Cross multiply
    212,176,963.68x = 318,318,412.80 × 74,004,556.32
  4. Step 4: Simplify right side
    212,176,963.68x = 23,557,012,907,750,608
  5. Step 5: Solve for x
    x = 23,557,012,907,750,608/212,176,963.68
  6. Step 6: Final answer
    x = 111,025,308.78

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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.