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Finding the Fourth Proportional to 382,806,640.80, 574,209,961.20 and 188,810,992.80

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Solution

The fourth proportional to 382,806,640.80, 574,209,961.20 and 188,810,992.80 is: 283,216,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,806,640.80 : 574,209,961.20 = 188,810,992.80 : x
  2. Step 2: Convert to fraction form
    382,806,640.80/574,209,961.20 = 188,810,992.80/x
  3. Step 3: Cross multiply
    382,806,640.80x = 574,209,961.20 × 188,810,992.80
  4. Step 4: Simplify right side
    382,806,640.80x = 108,417,152,849,821,488
  5. Step 5: Solve for x
    x = 108,417,152,849,821,488/382,806,640.80
  6. Step 6: Final answer
    x = 283,216,489.20

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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.