Home / 309,919,021.35-427,718,458.92-231,466,372.32

Finding the Fourth Proportional to 309,919,021.35, 427,718,458.92 and 231,466,372.32

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Solution

The fourth proportional to 309,919,021.35, 427,718,458.92 and 231,466,372.32 is: 319,446,156.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,919,021.35 : 427,718,458.92 = 231,466,372.32 : x
  2. Step 2: Convert to fraction form
    309,919,021.35/427,718,458.92 = 231,466,372.32/x
  3. Step 3: Cross multiply
    309,919,021.35x = 427,718,458.92 × 231,466,372.32
  4. Step 4: Simplify right side
    309,919,021.35x = 99,002,440,062,985,280
  5. Step 5: Solve for x
    x = 99,002,440,062,985,280/309,919,021.35
  6. Step 6: Final answer
    x = 319,446,156.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.