Home / 321,901,866.40-482,915,785.20-137,668,986.40

Finding the Fourth Proportional to 321,901,866.40, 482,915,785.20 and 137,668,986.40

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Solution

The fourth proportional to 321,901,866.40, 482,915,785.20 and 137,668,986.40 is: 206,530,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,901,866.40 : 482,915,785.20 = 137,668,986.40 : x
  2. Step 2: Convert to fraction form
    321,901,866.40/482,915,785.20 = 137,668,986.40/x
  3. Step 3: Cross multiply
    321,901,866.40x = 482,915,785.20 × 137,668,986.40
  4. Step 4: Simplify right side
    321,901,866.40x = 66,482,526,665,044,120
  5. Step 5: Solve for x
    x = 66,482,526,665,044,120/321,901,866.40
  6. Step 6: Final answer
    x = 206,530,416.89

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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.