Home / 221,411.05-305,538.44-130,796.11

Finding the Fourth Proportional to 221,411.05, 305,538.44 and 130,796.11

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Solution

The fourth proportional to 221,411.05, 305,538.44 and 130,796.11 is: 180,493.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,411.05 : 305,538.44 = 130,796.11 : x
  2. Step 2: Convert to fraction form
    221,411.05/305,538.44 = 130,796.11/x
  3. Step 3: Cross multiply
    221,411.05x = 305,538.44 × 130,796.11
  4. Step 4: Simplify right side
    221,411.05x = 39,963,239,407.47
  5. Step 5: Solve for x
    x = 39,963,239,407.47/221,411.05
  6. Step 6: Final answer
    x = 180,493.43

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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.