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Finding the Fourth Proportional to 207,245.70, 310,686.30 and 140,469.30

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Solution

The fourth proportional to 207,245.70, 310,686.30 and 140,469.30 is: 210,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,245.70 : 310,686.30 = 140,469.30 : x
  2. Step 2: Convert to fraction form
    207,245.70/310,686.30 = 140,469.30/x
  3. Step 3: Cross multiply
    207,245.70x = 310,686.30 × 140,469.30
  4. Step 4: Simplify right side
    207,245.70x = 43,641,887,080.59
  5. Step 5: Solve for x
    x = 43,641,887,080.59/207,245.70
  6. Step 6: Final answer
    x = 210,580.42

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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.