Home / 253,435.38-380,284.11-111,380.33

Finding the Fourth Proportional to 253,435.38, 380,284.11 and 111,380.33

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Solution

The fourth proportional to 253,435.38, 380,284.11 and 111,380.33 is: 167,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,435.38 : 380,284.11 = 111,380.33 : x
  2. Step 2: Convert to fraction form
    253,435.38/380,284.11 = 111,380.33/x
  3. Step 3: Cross multiply
    253,435.38x = 380,284.11 × 111,380.33
  4. Step 4: Simplify right side
    253,435.38x = 42,356,168,477.17
  5. Step 5: Solve for x
    x = 42,356,168,477.17/253,435.38
  6. Step 6: Final answer
    x = 167,128.08

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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.