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Finding the Fourth Proportional to 201,311.80, 301,967.70 and 61,077.40

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Solution

The fourth proportional to 201,311.80, 301,967.70 and 61,077.40 is: 91,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,311.80 : 301,967.70 = 61,077.40 : x
  2. Step 2: Convert to fraction form
    201,311.80/301,967.70 = 61,077.40/x
  3. Step 3: Cross multiply
    201,311.80x = 301,967.70 × 61,077.40
  4. Step 4: Simplify right side
    201,311.80x = 18,443,401,999.98
  5. Step 5: Solve for x
    x = 18,443,401,999.98/201,311.80
  6. Step 6: Final answer
    x = 91,616.10

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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.