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Finding the Fourth Proportional to 208,770,191,999.80, 313,155,287,999.70 and 208,770,191,999.80

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Solution

The fourth proportional to 208,770,191,999.80, 313,155,287,999.70 and 208,770,191,999.80 is: 313,155,287,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,770,191,999.80 : 313,155,287,999.70 = 208,770,191,999.80 : x
  2. Step 2: Convert to fraction form
    208,770,191,999.80/313,155,287,999.70 = 208,770,191,999.80/x
  3. Step 3: Cross multiply
    208,770,191,999.80x = 313,155,287,999.70 × 208,770,191,999.80
  4. Step 4: Simplify right side
    208,770,191,999.80x = 65,377,489,601,450,030,923,776
  5. Step 5: Solve for x
    x = 65,377,489,601,450,030,923,776/208,770,191,999.80
  6. Step 6: Final answer
    x = 313,155,287,999.70

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1.5x scale

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.