Home / 319,421,012.80-440,802,325.98-172,743,296.80

Finding the Fourth Proportional to 319,421,012.80, 440,802,325.98 and 172,743,296.80

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Solution

The fourth proportional to 319,421,012.80, 440,802,325.98 and 172,743,296.80 is: 238,386,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,421,012.80 : 440,802,325.98 = 172,743,296.80 : x
  2. Step 2: Convert to fraction form
    319,421,012.80/440,802,325.98 = 172,743,296.80/x
  3. Step 3: Cross multiply
    319,421,012.80x = 440,802,325.98 × 172,743,296.80
  4. Step 4: Simplify right side
    319,421,012.80x = 76,145,647,026,893,504
  5. Step 5: Solve for x
    x = 76,145,647,026,893,504/319,421,012.80
  6. Step 6: Final answer
    x = 238,386,467.94

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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.