Home / 221,213.57-305,202.53-130,538.93

Finding the Fourth Proportional to 221,213.57, 305,202.53 and 130,538.93

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Solution

The fourth proportional to 221,213.57, 305,202.53 and 130,538.93 is: 180,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,213.57 : 305,202.53 = 130,538.93 : x
  2. Step 2: Convert to fraction form
    221,213.57/305,202.53 = 130,538.93/x
  3. Step 3: Cross multiply
    221,213.57x = 305,202.53 × 130,538.93
  4. Step 4: Simplify right side
    221,213.57x = 39,840,810,499.83
  5. Step 5: Solve for x
    x = 39,840,810,499.83/221,213.57
  6. Step 6: Final answer
    x = 180,101.12

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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.