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Finding the Fourth Proportional to 270,662,433.20, 405,993,649.80 and 66,187,847.60

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Solution

The fourth proportional to 270,662,433.20, 405,993,649.80 and 66,187,847.60 is: 99,281,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,662,433.20 : 405,993,649.80 = 66,187,847.60 : x
  2. Step 2: Convert to fraction form
    270,662,433.20/405,993,649.80 = 66,187,847.60/x
  3. Step 3: Cross multiply
    270,662,433.20x = 405,993,649.80 × 66,187,847.60
  4. Step 4: Simplify right side
    270,662,433.20x = 26,871,845,819,530,172
  5. Step 5: Solve for x
    x = 26,871,845,819,530,172/270,662,433.20
  6. Step 6: Final answer
    x = 99,281,771.40

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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.