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Finding the Fourth Proportional to 290,338.65, 435,563.06 and 100,791.63

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Solution

The fourth proportional to 290,338.65, 435,563.06 and 100,791.63 is: 151,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,338.65 : 435,563.06 = 100,791.63 : x
  2. Step 2: Convert to fraction form
    290,338.65/435,563.06 = 100,791.63/x
  3. Step 3: Cross multiply
    290,338.65x = 435,563.06 × 100,791.63
  4. Step 4: Simplify right side
    290,338.65x = 43,901,110,281.23
  5. Step 5: Solve for x
    x = 43,901,110,281.23/290,338.65
  6. Step 6: Final answer
    x = 151,206.57

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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.