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Finding the Fourth Proportional to 320,690.07, 480,998.25 and 84,051.41

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Solution

The fourth proportional to 320,690.07, 480,998.25 and 84,051.41 is: 126,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,690.07 : 480,998.25 = 84,051.41 : x
  2. Step 2: Convert to fraction form
    320,690.07/480,998.25 = 84,051.41/x
  3. Step 3: Cross multiply
    320,690.07x = 480,998.25 × 84,051.41
  4. Step 4: Simplify right side
    320,690.07x = 40,428,578,715.04
  5. Step 5: Solve for x
    x = 40,428,578,715.04/320,690.07
  6. Step 6: Final answer
    x = 126,067.45

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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.