Home / 320,221,643.36-480,371,333.40-90,190,727.88

Finding the Fourth Proportional to 320,221,643.36, 480,371,333.40 and 90,190,727.88

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Solution

The fourth proportional to 320,221,643.36, 480,371,333.40 and 90,190,727.88 is: 135,297,039.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,221,643.36 : 480,371,333.40 = 90,190,727.88 : x
  2. Step 2: Convert to fraction form
    320,221,643.36/480,371,333.40 = 90,190,727.88/x
  3. Step 3: Cross multiply
    320,221,643.36x = 480,371,333.40 × 90,190,727.88
  4. Step 4: Simplify right side
    320,221,643.36x = 43,325,040,212,032,152
  5. Step 5: Solve for x
    x = 43,325,040,212,032,152/320,221,643.36
  6. Step 6: Final answer
    x = 135,297,039.13

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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.