Home / 279,221,935.88-418,288,030-217,522,196.20

Finding the Fourth Proportional to 279,221,935.88, 418,288,030 and 217,522,196.20

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Solution

The fourth proportional to 279,221,935.88, 418,288,030 and 217,522,196.20 is: 325,858,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,221,935.88 : 418,288,030 = 217,522,196.20 : x
  2. Step 2: Convert to fraction form
    279,221,935.88/418,288,030 = 217,522,196.20/x
  3. Step 3: Cross multiply
    279,221,935.88x = 418,288,030 × 217,522,196.20
  4. Step 4: Simplify right side
    279,221,935.88x = 90,986,930,929,771,488
  5. Step 5: Solve for x
    x = 90,986,930,929,771,488/279,221,935.88
  6. Step 6: Final answer
    x = 325,858,821.38

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1.5x scale

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.