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Finding the Fourth Proportional to 146,016.40, 218,981.40 and 57,218.80

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Solution

The fourth proportional to 146,016.40, 218,981.40 and 57,218.80 is: 85,811.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,016.40 : 218,981.40 = 57,218.80 : x
  2. Step 2: Convert to fraction form
    146,016.40/218,981.40 = 57,218.80/x
  3. Step 3: Cross multiply
    146,016.40x = 218,981.40 × 57,218.80
  4. Step 4: Simplify right side
    146,016.40x = 12,529,852,930.32
  5. Step 5: Solve for x
    x = 12,529,852,930.32/146,016.40
  6. Step 6: Final answer
    x = 85,811.27

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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.