Home / 319,421,207.20-440,802,594.48-172,743,491.20

Finding the Fourth Proportional to 319,421,207.20, 440,802,594.48 and 172,743,491.20

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Solution

The fourth proportional to 319,421,207.20, 440,802,594.48 and 172,743,491.20 is: 238,386,736.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,421,207.20 : 440,802,594.48 = 172,743,491.20 : x
  2. Step 2: Convert to fraction form
    319,421,207.20/440,802,594.48 = 172,743,491.20/x
  3. Step 3: Cross multiply
    319,421,207.20x = 440,802,594.48 × 172,743,491.20
  4. Step 4: Simplify right side
    319,421,207.20x = 76,145,779,100,493,040
  5. Step 5: Solve for x
    x = 76,145,779,100,493,040/319,421,207.20
  6. Step 6: Final answer
    x = 238,386,736.33

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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.