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Finding the Fourth Proportional to 401,991.36, 602,992.80 and 191,651.52

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Solution

The fourth proportional to 401,991.36, 602,992.80 and 191,651.52 is: 287,480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,991.36 : 602,992.80 = 191,651.52 : x
  2. Step 2: Convert to fraction form
    401,991.36/602,992.80 = 191,651.52/x
  3. Step 3: Cross multiply
    401,991.36x = 602,992.80 × 191,651.52
  4. Step 4: Simplify right side
    401,991.36x = 115,564,486,669.06
  5. Step 5: Solve for x
    x = 115,564,486,669.06/401,991.36
  6. Step 6: Final answer
    x = 287,480.03

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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.