Home / 319,921.09-479,512.51-120,114.03

Finding the Fourth Proportional to 319,921.09, 479,512.51 and 120,114.03

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Solution

The fourth proportional to 319,921.09, 479,512.51 and 120,114.03 is: 180,032.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,921.09 : 479,512.51 = 120,114.03 : x
  2. Step 2: Convert to fraction form
    319,921.09/479,512.51 = 120,114.03/x
  3. Step 3: Cross multiply
    319,921.09x = 479,512.51 × 120,114.03
  4. Step 4: Simplify right side
    319,921.09x = 57,596,181,509.40
  5. Step 5: Solve for x
    x = 57,596,181,509.40/319,921.09
  6. Step 6: Final answer
    x = 180,032.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.