Home / 221,176.12-305,262.30-130,525.60

Finding the Fourth Proportional to 221,176.12, 305,262.30 and 130,525.60

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Solution

The fourth proportional to 221,176.12, 305,262.30 and 130,525.60 is: 180,148.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,176.12 : 305,262.30 = 130,525.60 : x
  2. Step 2: Convert to fraction form
    221,176.12/305,262.30 = 130,525.60/x
  3. Step 3: Cross multiply
    221,176.12x = 305,262.30 × 130,525.60
  4. Step 4: Simplify right side
    221,176.12x = 39,844,544,864.88
  5. Step 5: Solve for x
    x = 39,844,544,864.88/221,176.12
  6. Step 6: Final answer
    x = 180,148.49

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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.