Home / 380,739.16-525,391.14-210,969.64

Finding the Fourth Proportional to 380,739.16, 525,391.14 and 210,969.64

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Solution

The fourth proportional to 380,739.16, 525,391.14 and 210,969.64 is: 291,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,739.16 : 525,391.14 = 210,969.64 : x
  2. Step 2: Convert to fraction form
    380,739.16/525,391.14 = 210,969.64/x
  3. Step 3: Cross multiply
    380,739.16x = 525,391.14 × 210,969.64
  4. Step 4: Simplify right side
    380,739.16x = 110,841,579,664.99
  5. Step 5: Solve for x
    x = 110,841,579,664.99/380,739.16
  6. Step 6: Final answer
    x = 291,122.09

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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.