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Finding the Fourth Proportional to 223,838.36, 335,870.10 and 139,576.76

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Solution

The fourth proportional to 223,838.36, 335,870.10 and 139,576.76 is: 209,435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,838.36 : 335,870.10 = 139,576.76 : x
  2. Step 2: Convert to fraction form
    223,838.36/335,870.10 = 139,576.76/x
  3. Step 3: Cross multiply
    223,838.36x = 335,870.10 × 139,576.76
  4. Step 4: Simplify right side
    223,838.36x = 46,879,660,338.88
  5. Step 5: Solve for x
    x = 46,879,660,338.88/223,838.36
  6. Step 6: Final answer
    x = 209,435.33

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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.