Home / 212,412,418.30-318,618,627.45-155,016,790.30

Finding the Fourth Proportional to 212,412,418.30, 318,618,627.45 and 155,016,790.30

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Solution

The fourth proportional to 212,412,418.30, 318,618,627.45 and 155,016,790.30 is: 232,525,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,412,418.30 : 318,618,627.45 = 155,016,790.30 : x
  2. Step 2: Convert to fraction form
    212,412,418.30/318,618,627.45 = 155,016,790.30/x
  3. Step 3: Cross multiply
    212,412,418.30x = 318,618,627.45 × 155,016,790.30
  4. Step 4: Simplify right side
    212,412,418.30x = 49,391,236,957,090,472
  5. Step 5: Solve for x
    x = 49,391,236,957,090,472/212,412,418.30
  6. Step 6: Final answer
    x = 232,525,185.45

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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.