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Finding the Fourth Proportional to 320,804,706.80, 481,207,060.20 and 78,467,610.80

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Solution

The fourth proportional to 320,804,706.80, 481,207,060.20 and 78,467,610.80 is: 117,701,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,804,706.80 : 481,207,060.20 = 78,467,610.80 : x
  2. Step 2: Convert to fraction form
    320,804,706.80/481,207,060.20 = 78,467,610.80/x
  3. Step 3: Cross multiply
    320,804,706.80x = 481,207,060.20 × 78,467,610.80
  4. Step 4: Simplify right side
    320,804,706.80x = 37,759,168,313,985,768
  5. Step 5: Solve for x
    x = 37,759,168,313,985,768/320,804,706.80
  6. Step 6: Final answer
    x = 117,701,416.20

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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.