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Finding the Fourth Proportional to 252,561,855.60, 378,842,783.40 and 143,722,738.80

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Solution

The fourth proportional to 252,561,855.60, 378,842,783.40 and 143,722,738.80 is: 215,584,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,561,855.60 : 378,842,783.40 = 143,722,738.80 : x
  2. Step 2: Convert to fraction form
    252,561,855.60/378,842,783.40 = 143,722,738.80/x
  3. Step 3: Cross multiply
    252,561,855.60x = 378,842,783.40 × 143,722,738.80
  4. Step 4: Simplify right side
    252,561,855.60x = 54,448,322,404,863,176
  5. Step 5: Solve for x
    x = 54,448,322,404,863,176/252,561,855.60
  6. Step 6: Final answer
    x = 215,584,108.20

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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.