Home / 221,179.12-305,266.44-130,528.60

Finding the Fourth Proportional to 221,179.12, 305,266.44 and 130,528.60

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Solution

The fourth proportional to 221,179.12, 305,266.44 and 130,528.60 is: 180,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,179.12 : 305,266.44 = 130,528.60 : x
  2. Step 2: Convert to fraction form
    221,179.12/305,266.44 = 130,528.60/x
  3. Step 3: Cross multiply
    221,179.12x = 305,266.44 × 130,528.60
  4. Step 4: Simplify right side
    221,179.12x = 39,846,001,040.18
  5. Step 5: Solve for x
    x = 39,846,001,040.18/221,179.12
  6. Step 6: Final answer
    x = 180,152.63

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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.