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Finding the Fourth Proportional to 266,830,286.40, 400,245,429.60 and 243,021,729.60

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Solution

The fourth proportional to 266,830,286.40, 400,245,429.60 and 243,021,729.60 is: 364,532,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,830,286.40 : 400,245,429.60 = 243,021,729.60 : x
  2. Step 2: Convert to fraction form
    266,830,286.40/400,245,429.60 = 243,021,729.60/x
  3. Step 3: Cross multiply
    266,830,286.40x = 400,245,429.60 × 243,021,729.60
  4. Step 4: Simplify right side
    266,830,286.40x = 97,268,336,565,887,040
  5. Step 5: Solve for x
    x = 97,268,336,565,887,040/266,830,286.40
  6. Step 6: Final answer
    x = 364,532,594.40

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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.