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Finding the Fourth Proportional to 210,492.54, 315,734.28 and 68,337.54

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Solution

The fourth proportional to 210,492.54, 315,734.28 and 68,337.54 is: 102,504.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,492.54 : 315,734.28 = 68,337.54 : x
  2. Step 2: Convert to fraction form
    210,492.54/315,734.28 = 68,337.54/x
  3. Step 3: Cross multiply
    210,492.54x = 315,734.28 × 68,337.54
  4. Step 4: Simplify right side
    210,492.54x = 21,576,503,988.87
  5. Step 5: Solve for x
    x = 21,576,503,988.87/210,492.54
  6. Step 6: Final answer
    x = 102,504.84

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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.