Home / 319,198,389.42-440,493,578.44-172,520,673.42

Finding the Fourth Proportional to 319,198,389.42, 440,493,578.44 and 172,520,673.42

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Solution

The fourth proportional to 319,198,389.42, 440,493,578.44 and 172,520,673.42 is: 238,078,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,389.42 : 440,493,578.44 = 172,520,673.42 : x
  2. Step 2: Convert to fraction form
    319,198,389.42/440,493,578.44 = 172,520,673.42/x
  3. Step 3: Cross multiply
    319,198,389.42x = 440,493,578.44 × 172,520,673.42
  4. Step 4: Simplify right side
    319,198,389.42x = 75,994,248,789,223,088
  5. Step 5: Solve for x
    x = 75,994,248,789,223,088/319,198,389.42
  6. Step 6: Final answer
    x = 238,078,421.78

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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.