Home / 319,918.43-479,508.54-120,111.38

Finding the Fourth Proportional to 319,918.43, 479,508.54 and 120,111.38

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Solution

The fourth proportional to 319,918.43, 479,508.54 and 120,111.38 is: 180,028.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,918.43 : 479,508.54 = 120,111.38 : x
  2. Step 2: Convert to fraction form
    319,918.43/479,508.54 = 120,111.38/x
  3. Step 3: Cross multiply
    319,918.43x = 479,508.54 × 120,111.38
  4. Step 4: Simplify right side
    319,918.43x = 57,594,432,461.19
  5. Step 5: Solve for x
    x = 57,594,432,461.19/319,918.43
  6. Step 6: Final answer
    x = 180,028.49

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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.