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Finding the Fourth Proportional to 207,999.65, 312,000.38 and 65,845.62

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Solution

The fourth proportional to 207,999.65, 312,000.38 and 65,845.62 is: 98,768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,999.65 : 312,000.38 = 65,845.62 : x
  2. Step 2: Convert to fraction form
    207,999.65/312,000.38 = 65,845.62/x
  3. Step 3: Cross multiply
    207,999.65x = 312,000.38 × 65,845.62
  4. Step 4: Simplify right side
    207,999.65x = 20,543,858,461.34
  5. Step 5: Solve for x
    x = 20,543,858,461.34/207,999.65
  6. Step 6: Final answer
    x = 98,768.72

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1.5x scale

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.