Home / 221,150.41-305,177.89-135,253.55

Finding the Fourth Proportional to 221,150.41, 305,177.89 and 135,253.55

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Solution

The fourth proportional to 221,150.41, 305,177.89 and 135,253.55 is: 186,643.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,150.41 : 305,177.89 = 135,253.55 : x
  2. Step 2: Convert to fraction form
    221,150.41/305,177.89 = 135,253.55/x
  3. Step 3: Cross multiply
    221,150.41x = 305,177.89 × 135,253.55
  4. Step 4: Simplify right side
    221,150.41x = 41,276,393,004.01
  5. Step 5: Solve for x
    x = 41,276,393,004.01/221,150.41
  6. Step 6: Final answer
    x = 186,643.98

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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.