Home / 265,971.36-398,432.16-199,486.56

Finding the Fourth Proportional to 265,971.36, 398,432.16 and 199,486.56

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Solution

The fourth proportional to 265,971.36, 398,432.16 and 199,486.56 is: 298,836.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,971.36 : 398,432.16 = 199,486.56 : x
  2. Step 2: Convert to fraction form
    265,971.36/398,432.16 = 199,486.56/x
  3. Step 3: Cross multiply
    265,971.36x = 398,432.16 × 199,486.56
  4. Step 4: Simplify right side
    265,971.36x = 79,481,860,991.77
  5. Step 5: Solve for x
    x = 79,481,860,991.77/265,971.36
  6. Step 6: Final answer
    x = 298,836.16

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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.