Home / 305,386.28-421,257.97-190,465.41

Finding the Fourth Proportional to 305,386.28, 421,257.97 and 190,465.41

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Solution

The fourth proportional to 305,386.28, 421,257.97 and 190,465.41 is: 262,733.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,386.28 : 421,257.97 = 190,465.41 : x
  2. Step 2: Convert to fraction form
    305,386.28/421,257.97 = 190,465.41/x
  3. Step 3: Cross multiply
    305,386.28x = 421,257.97 × 190,465.41
  4. Step 4: Simplify right side
    305,386.28x = 80,235,070,341.69
  5. Step 5: Solve for x
    x = 80,235,070,341.69/305,386.28
  6. Step 6: Final answer
    x = 262,733.06

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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.