Home / 305,300.43-421,038.81-190,589.66

Finding the Fourth Proportional to 305,300.43, 421,038.81 and 190,589.66

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Solution

The fourth proportional to 305,300.43, 421,038.81 and 190,589.66 is: 262,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,300.43 : 421,038.81 = 190,589.66 : x
  2. Step 2: Convert to fraction form
    305,300.43/421,038.81 = 190,589.66/x
  3. Step 3: Cross multiply
    305,300.43x = 421,038.81 × 190,589.66
  4. Step 4: Simplify right side
    305,300.43x = 80,245,643,644.70
  5. Step 5: Solve for x
    x = 80,245,643,644.70/305,300.43
  6. Step 6: Final answer
    x = 262,841.57

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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.