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Finding the Fourth Proportional to 401,290.54, 601,998.06 and 135,030.28

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Solution

The fourth proportional to 401,290.54, 601,998.06 and 135,030.28 is: 202,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,290.54 : 601,998.06 = 135,030.28 : x
  2. Step 2: Convert to fraction form
    401,290.54/601,998.06 = 135,030.28/x
  3. Step 3: Cross multiply
    401,290.54x = 601,998.06 × 135,030.28
  4. Step 4: Simplify right side
    401,290.54x = 81,287,965,694.93
  5. Step 5: Solve for x
    x = 81,287,965,694.93/401,290.54
  6. Step 6: Final answer
    x = 202,566.36

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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.