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Finding the Fourth Proportional to 351,636.72, 485,258.44 and 190,492.32

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Solution

The fourth proportional to 351,636.72, 485,258.44 and 190,492.32 is: 262,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,636.72 : 485,258.44 = 190,492.32 : x
  2. Step 2: Convert to fraction form
    351,636.72/485,258.44 = 190,492.32/x
  3. Step 3: Cross multiply
    351,636.72x = 485,258.44 × 190,492.32
  4. Step 4: Simplify right side
    351,636.72x = 92,438,006,035.18
  5. Step 5: Solve for x
    x = 92,438,006,035.18/351,636.72
  6. Step 6: Final answer
    x = 262,879.28

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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.