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Finding the Fourth Proportional to 202,628.64, 304,004.40 and 143,578.72

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Solution

The fourth proportional to 202,628.64, 304,004.40 and 143,578.72 is: 215,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,628.64 : 304,004.40 = 143,578.72 : x
  2. Step 2: Convert to fraction form
    202,628.64/304,004.40 = 143,578.72/x
  3. Step 3: Cross multiply
    202,628.64x = 304,004.40 × 143,578.72
  4. Step 4: Simplify right side
    202,628.64x = 43,648,562,626.37
  5. Step 5: Solve for x
    x = 43,648,562,626.37/202,628.64
  6. Step 6: Final answer
    x = 215,411.62

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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.