Home / 317,974.60-438,709.26-190,603.72

Finding the Fourth Proportional to 317,974.60, 438,709.26 and 190,603.72

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Solution

The fourth proportional to 317,974.60, 438,709.26 and 190,603.72 is: 262,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,974.60 : 438,709.26 = 190,603.72 : x
  2. Step 2: Convert to fraction form
    317,974.60/438,709.26 = 190,603.72/x
  3. Step 3: Cross multiply
    317,974.60x = 438,709.26 × 190,603.72
  4. Step 4: Simplify right side
    317,974.60x = 83,619,616,954.45
  5. Step 5: Solve for x
    x = 83,619,616,954.45/317,974.60
  6. Step 6: Final answer
    x = 262,975.78

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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.