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Finding the Fourth Proportional to 290,321.23, 435,369.52 and 112,804.87

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Solution

The fourth proportional to 290,321.23, 435,369.52 and 112,804.87 is: 169,163.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,321.23 : 435,369.52 = 112,804.87 : x
  2. Step 2: Convert to fraction form
    290,321.23/435,369.52 = 112,804.87/x
  3. Step 3: Cross multiply
    290,321.23x = 435,369.52 × 112,804.87
  4. Step 4: Simplify right side
    290,321.23x = 49,111,799,364.69
  5. Step 5: Solve for x
    x = 49,111,799,364.69/290,321.23
  6. Step 6: Final answer
    x = 169,163.65

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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.