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Finding the Fourth Proportional to 211,552,081.20, 317,328,121.80 and 211,552,081.20

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Solution

The fourth proportional to 211,552,081.20, 317,328,121.80 and 211,552,081.20 is: 317,328,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,552,081.20 : 317,328,121.80 = 211,552,081.20 : x
  2. Step 2: Convert to fraction form
    211,552,081.20/317,328,121.80 = 211,552,081.20/x
  3. Step 3: Cross multiply
    211,552,081.20x = 317,328,121.80 × 211,552,081.20
  4. Step 4: Simplify right side
    211,552,081.20x = 67,131,424,590,077,088
  5. Step 5: Solve for x
    x = 67,131,424,590,077,088/211,552,081.20
  6. Step 6: Final answer
    x = 317,328,121.80

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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.