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Finding the Fourth Proportional to 300,302,405.80, 450,453,608.70 and 127,784,847.40

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Solution

The fourth proportional to 300,302,405.80, 450,453,608.70 and 127,784,847.40 is: 191,677,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,302,405.80 : 450,453,608.70 = 127,784,847.40 : x
  2. Step 2: Convert to fraction form
    300,302,405.80/450,453,608.70 = 127,784,847.40/x
  3. Step 3: Cross multiply
    300,302,405.80x = 450,453,608.70 × 127,784,847.40
  4. Step 4: Simplify right side
    300,302,405.80x = 57,561,145,648,508,816
  5. Step 5: Solve for x
    x = 57,561,145,648,508,816/300,302,405.80
  6. Step 6: Final answer
    x = 191,677,271.10

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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.