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Finding the Fourth Proportional to 290,320.92, 435,369.42 and 112,804.56

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Solution

The fourth proportional to 290,320.92, 435,369.42 and 112,804.56 is: 169,163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,320.92 : 435,369.42 = 112,804.56 : x
  2. Step 2: Convert to fraction form
    290,320.92/435,369.42 = 112,804.56/x
  3. Step 3: Cross multiply
    290,320.92x = 435,369.42 × 112,804.56
  4. Step 4: Simplify right side
    290,320.92x = 49,111,655,860.56
  5. Step 5: Solve for x
    x = 49,111,655,860.56/290,320.92
  6. Step 6: Final answer
    x = 169,163.34

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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.