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Finding the Fourth Proportional to 355,978,975.40, 533,968,463.10 and 331,036,677.80

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Solution

The fourth proportional to 355,978,975.40, 533,968,463.10 and 331,036,677.80 is: 496,555,016.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,978,975.40 : 533,968,463.10 = 331,036,677.80 : x
  2. Step 2: Convert to fraction form
    355,978,975.40/533,968,463.10 = 331,036,677.80/x
  3. Step 3: Cross multiply
    355,978,975.40x = 533,968,463.10 × 331,036,677.80
  4. Step 4: Simplify right side
    355,978,975.40x = 176,763,146,074,595,904
  5. Step 5: Solve for x
    x = 176,763,146,074,595,904/355,978,975.40
  6. Step 6: Final answer
    x = 496,555,016.70

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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.