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Finding the Fourth Proportional to 296,609.76, 408,993.48 and 189,009.36

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Solution

The fourth proportional to 296,609.76, 408,993.48 and 189,009.36 is: 260,623.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,609.76 : 408,993.48 = 189,009.36 : x
  2. Step 2: Convert to fraction form
    296,609.76/408,993.48 = 189,009.36/x
  3. Step 3: Cross multiply
    296,609.76x = 408,993.48 × 189,009.36
  4. Step 4: Simplify right side
    296,609.76x = 77,303,595,898.97
  5. Step 5: Solve for x
    x = 77,303,595,898.97/296,609.76
  6. Step 6: Final answer
    x = 260,623.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.