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Finding the Fourth Proportional to 221,483.40, 305,540.82 and 144,968.82

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Solution

The fourth proportional to 221,483.40, 305,540.82 and 144,968.82 is: 199,987.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,483.40 : 305,540.82 = 144,968.82 : x
  2. Step 2: Convert to fraction form
    221,483.40/305,540.82 = 144,968.82/x
  3. Step 3: Cross multiply
    221,483.40x = 305,540.82 × 144,968.82
  4. Step 4: Simplify right side
    221,483.40x = 44,293,892,137.23
  5. Step 5: Solve for x
    x = 44,293,892,137.23/221,483.40
  6. Step 6: Final answer
    x = 199,987.41

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1.5x scale

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.