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Finding the Fourth Proportional to 270,644.40, 405,966.60 and 83,674.80

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Solution

The fourth proportional to 270,644.40, 405,966.60 and 83,674.80 is: 125,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,644.40 : 405,966.60 = 83,674.80 : x
  2. Step 2: Convert to fraction form
    270,644.40/405,966.60 = 83,674.80/x
  3. Step 3: Cross multiply
    270,644.40x = 405,966.60 × 83,674.80
  4. Step 4: Simplify right side
    270,644.40x = 33,969,174,061.68
  5. Step 5: Solve for x
    x = 33,969,174,061.68/270,644.40
  6. Step 6: Final answer
    x = 125,512.20

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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.