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Finding the Fourth Proportional to 145,400.40, 218,100.60 and 143,326.80

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Solution

The fourth proportional to 145,400.40, 218,100.60 and 143,326.80 is: 214,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,400.40 : 218,100.60 = 143,326.80 : x
  2. Step 2: Convert to fraction form
    145,400.40/218,100.60 = 143,326.80/x
  3. Step 3: Cross multiply
    145,400.40x = 218,100.60 × 143,326.80
  4. Step 4: Simplify right side
    145,400.40x = 31,259,661,076.08
  5. Step 5: Solve for x
    x = 31,259,661,076.08/145,400.40
  6. Step 6: Final answer
    x = 214,990.20

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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.