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Finding the Fourth Proportional to 351,497.50, 485,064 and 190,348.81

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Solution

The fourth proportional to 351,497.50, 485,064 and 190,348.81 is: 262,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,497.50 : 485,064 = 190,348.81 : x
  2. Step 2: Convert to fraction form
    351,497.50/485,064 = 190,348.81/x
  3. Step 3: Cross multiply
    351,497.50x = 485,064 × 190,348.81
  4. Step 4: Simplify right side
    351,497.50x = 92,331,353,961.18
  5. Step 5: Solve for x
    x = 92,331,353,961.18/351,497.50
  6. Step 6: Final answer
    x = 262,679.98

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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.