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Finding the Fourth Proportional to 401,055.85, 601,561.63 and 134,788.87

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Solution

The fourth proportional to 401,055.85, 601,561.63 and 134,788.87 is: 202,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,055.85 : 601,561.63 = 134,788.87 : x
  2. Step 2: Convert to fraction form
    401,055.85/601,561.63 = 134,788.87/x
  3. Step 3: Cross multiply
    401,055.85x = 601,561.63 × 134,788.87
  4. Step 4: Simplify right side
    401,055.85x = 81,083,812,343.06
  5. Step 5: Solve for x
    x = 81,083,812,343.06/401,055.85
  6. Step 6: Final answer
    x = 202,175.86

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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.