Home / 221,107.22-305,089.71-130,456.34

Finding the Fourth Proportional to 221,107.22, 305,089.71 and 130,456.34

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Solution

The fourth proportional to 221,107.22, 305,089.71 and 130,456.34 is: 180,007.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,107.22 : 305,089.71 = 130,456.34 : x
  2. Step 2: Convert to fraction form
    221,107.22/305,089.71 = 130,456.34/x
  3. Step 3: Cross multiply
    221,107.22x = 305,089.71 × 130,456.34
  4. Step 4: Simplify right side
    221,107.22x = 39,800,886,938.26
  5. Step 5: Solve for x
    x = 39,800,886,938.26/221,107.22
  6. Step 6: Final answer
    x = 180,007.18

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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.