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Finding the Fourth Proportional to 290,516.75, 435,791.52 and 103,528.25

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Solution

The fourth proportional to 290,516.75, 435,791.52 and 103,528.25 is: 155,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,516.75 : 435,791.52 = 103,528.25 : x
  2. Step 2: Convert to fraction form
    290,516.75/435,791.52 = 103,528.25/x
  3. Step 3: Cross multiply
    290,516.75x = 435,791.52 × 103,528.25
  4. Step 4: Simplify right side
    290,516.75x = 45,116,733,430.44
  5. Step 5: Solve for x
    x = 45,116,733,430.44/290,516.75
  6. Step 6: Final answer
    x = 155,298.22

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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.