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Finding the Fourth Proportional to 259,349.40, 388,586.70 and 214,734.60

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Solution

The fourth proportional to 259,349.40, 388,586.70 and 214,734.60 is: 321,739.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,349.40 : 388,586.70 = 214,734.60 : x
  2. Step 2: Convert to fraction form
    259,349.40/388,586.70 = 214,734.60/x
  3. Step 3: Cross multiply
    259,349.40x = 388,586.70 × 214,734.60
  4. Step 4: Simplify right side
    259,349.40x = 83,443,009,589.82
  5. Step 5: Solve for x
    x = 83,443,009,589.82/259,349.40
  6. Step 6: Final answer
    x = 321,739.74

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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.