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Finding the Fourth Proportional to 290,948,121.45, 436,422,182.18 and 290,948,121.45

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Solution

The fourth proportional to 290,948,121.45, 436,422,182.18 and 290,948,121.45 is: 436,422,182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,948,121.45 : 436,422,182.18 = 290,948,121.45 : x
  2. Step 2: Convert to fraction form
    290,948,121.45/436,422,182.18 = 290,948,121.45/x
  3. Step 3: Cross multiply
    290,948,121.45x = 436,422,182.18 × 290,948,121.45
  4. Step 4: Simplify right side
    290,948,121.45x = 126,976,214,062,925,920
  5. Step 5: Solve for x
    x = 126,976,214,062,925,920/290,948,121.45
  6. Step 6: Final answer
    x = 436,422,182.18

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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.