Home / 320,221,580.68-480,371,239.62-90,190,665.36

Finding the Fourth Proportional to 320,221,580.68, 480,371,239.62 and 90,190,665.36

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Solution

The fourth proportional to 320,221,580.68, 480,371,239.62 and 90,190,665.36 is: 135,296,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,221,580.68 : 480,371,239.62 = 90,190,665.36 : x
  2. Step 2: Convert to fraction form
    320,221,580.68/480,371,239.62 = 90,190,665.36/x
  3. Step 3: Cross multiply
    320,221,580.68x = 480,371,239.62 × 90,190,665.36
  4. Step 4: Simplify right side
    320,221,580.68x = 43,325,001,721,135,792
  5. Step 5: Solve for x
    x = 43,325,001,721,135,792/320,221,580.68
  6. Step 6: Final answer
    x = 135,296,945.41

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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.