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Finding the Fourth Proportional to 398,845, 598,661.60 and 174,360.36

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Solution

The fourth proportional to 398,845, 598,661.60 and 174,360.36 is: 261,712.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,845 : 598,661.60 = 174,360.36 : x
  2. Step 2: Convert to fraction form
    398,845/598,661.60 = 174,360.36/x
  3. Step 3: Cross multiply
    398,845x = 598,661.60 × 174,360.36
  4. Step 4: Simplify right side
    398,845x = 104,382,852,094.18
  5. Step 5: Solve for x
    x = 104,382,852,094.18/398,845
  6. Step 6: Final answer
    x = 261,712.83

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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.