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Finding the Fourth Proportional to 351,544.64, 485,129.16 and 190,396

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Solution

The fourth proportional to 351,544.64, 485,129.16 and 190,396 is: 262,745.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,544.64 : 485,129.16 = 190,396 : x
  2. Step 2: Convert to fraction form
    351,544.64/485,129.16 = 190,396/x
  3. Step 3: Cross multiply
    351,544.64x = 485,129.16 × 190,396
  4. Step 4: Simplify right side
    351,544.64x = 92,366,651,547.36
  5. Step 5: Solve for x
    x = 92,366,651,547.36/351,544.64
  6. Step 6: Final answer
    x = 262,745.16

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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.