Home / 221,614.56-305,787.48-130,985.28

Finding the Fourth Proportional to 221,614.56, 305,787.48 and 130,985.28

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Solution

The fourth proportional to 221,614.56, 305,787.48 and 130,985.28 is: 180,735.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,614.56 : 305,787.48 = 130,985.28 : x
  2. Step 2: Convert to fraction form
    221,614.56/305,787.48 = 130,985.28/x
  3. Step 3: Cross multiply
    221,614.56x = 305,787.48 × 130,985.28
  4. Step 4: Simplify right side
    221,614.56x = 40,053,658,688.29
  5. Step 5: Solve for x
    x = 40,053,658,688.29/221,614.56
  6. Step 6: Final answer
    x = 180,735.68

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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.