Home / 217,418,653.52-325,716,489.30-128,521,078.52

Finding the Fourth Proportional to 217,418,653.52, 325,716,489.30 and 128,521,078.52

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Solution

The fourth proportional to 217,418,653.52, 325,716,489.30 and 128,521,078.52 is: 192,538,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,418,653.52 : 325,716,489.30 = 128,521,078.52 : x
  2. Step 2: Convert to fraction form
    217,418,653.52/325,716,489.30 = 128,521,078.52/x
  3. Step 3: Cross multiply
    217,418,653.52x = 325,716,489.30 × 128,521,078.52
  4. Step 4: Simplify right side
    217,418,653.52x = 41,861,434,496,584,040
  5. Step 5: Solve for x
    x = 41,861,434,496,584,040/217,418,653.52
  6. Step 6: Final answer
    x = 192,538,376.16

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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.