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Finding the Fourth Proportional to 291,728.93, 402,660.83 and 190,007.87

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Solution

The fourth proportional to 291,728.93, 402,660.83 and 190,007.87 is: 262,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,728.93 : 402,660.83 = 190,007.87 : x
  2. Step 2: Convert to fraction form
    291,728.93/402,660.83 = 190,007.87/x
  3. Step 3: Cross multiply
    291,728.93x = 402,660.83 × 190,007.87
  4. Step 4: Simplify right side
    291,728.93x = 76,508,726,640.73
  5. Step 5: Solve for x
    x = 76,508,726,640.73/291,728.93
  6. Step 6: Final answer
    x = 262,259.65

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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.