Home / 320,221,579.68-480,371,238.12-90,190,664.36

Finding the Fourth Proportional to 320,221,579.68, 480,371,238.12 and 90,190,664.36

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Solution

The fourth proportional to 320,221,579.68, 480,371,238.12 and 90,190,664.36 is: 135,296,943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,221,579.68 : 480,371,238.12 = 90,190,664.36 : x
  2. Step 2: Convert to fraction form
    320,221,579.68/480,371,238.12 = 90,190,664.36/x
  3. Step 3: Cross multiply
    320,221,579.68x = 480,371,238.12 × 90,190,664.36
  4. Step 4: Simplify right side
    320,221,579.68x = 43,325,001,105,478,560
  5. Step 5: Solve for x
    x = 43,325,001,105,478,560/320,221,579.68
  6. Step 6: Final answer
    x = 135,296,943.91

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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.