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Finding the Fourth Proportional to 217,269,445.80, 325,904,168.70 and 102,478,189.80

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Solution

The fourth proportional to 217,269,445.80, 325,904,168.70 and 102,478,189.80 is: 153,717,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,269,445.80 : 325,904,168.70 = 102,478,189.80 : x
  2. Step 2: Convert to fraction form
    217,269,445.80/325,904,168.70 = 102,478,189.80/x
  3. Step 3: Cross multiply
    217,269,445.80x = 325,904,168.70 × 102,478,189.80
  4. Step 4: Simplify right side
    217,269,445.80x = 33,398,069,256,649,816
  5. Step 5: Solve for x
    x = 33,398,069,256,649,816/217,269,445.80
  6. Step 6: Final answer
    x = 153,717,284.70

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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.