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Finding the Fourth Proportional to 299,559,937.80, 449,339,906.70 and 245,140,379.40

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Solution

The fourth proportional to 299,559,937.80, 449,339,906.70 and 245,140,379.40 is: 367,710,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,559,937.80 : 449,339,906.70 = 245,140,379.40 : x
  2. Step 2: Convert to fraction form
    299,559,937.80/449,339,906.70 = 245,140,379.40/x
  3. Step 3: Cross multiply
    299,559,937.80x = 449,339,906.70 × 245,140,379.40
  4. Step 4: Simplify right side
    299,559,937.80x = 110,151,355,207,998,608
  5. Step 5: Solve for x
    x = 110,151,355,207,998,608/299,559,937.80
  6. Step 6: Final answer
    x = 367,710,569.10

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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.