Home / 380,721.72-525,388.14-210,954.36

Finding the Fourth Proportional to 380,721.72, 525,388.14 and 210,954.36

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Solution

The fourth proportional to 380,721.72, 525,388.14 and 210,954.36 is: 291,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,721.72 : 525,388.14 = 210,954.36 : x
  2. Step 2: Convert to fraction form
    380,721.72/525,388.14 = 210,954.36/x
  3. Step 3: Cross multiply
    380,721.72x = 525,388.14 × 210,954.36
  4. Step 4: Simplify right side
    380,721.72x = 110,832,918,825.29
  5. Step 5: Solve for x
    x = 110,832,918,825.29/380,721.72
  6. Step 6: Final answer
    x = 291,112.68

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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.