Home / 320,221,637.28-480,371,324.40-90,190,721.82

Finding the Fourth Proportional to 320,221,637.28, 480,371,324.40 and 90,190,721.82

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Solution

The fourth proportional to 320,221,637.28, 480,371,324.40 and 90,190,721.82 is: 135,297,030.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,221,637.28 : 480,371,324.40 = 90,190,721.82 : x
  2. Step 2: Convert to fraction form
    320,221,637.28/480,371,324.40 = 90,190,721.82/x
  3. Step 3: Cross multiply
    320,221,637.28x = 480,371,324.40 × 90,190,721.82
  4. Step 4: Simplify right side
    320,221,637.28x = 43,325,036,489,265,376
  5. Step 5: Solve for x
    x = 43,325,036,489,265,376/320,221,637.28
  6. Step 6: Final answer
    x = 135,297,030.07

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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.