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Finding the Fourth Proportional to 221,648.00, 305,856.95 and 130,986.72

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Solution

The fourth proportional to 221,648.00, 305,856.95 and 130,986.72 is: 180,751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,648.00 : 305,856.95 = 130,986.72 : x
  2. Step 2: Convert to fraction form
    221,648.00/305,856.95 = 130,986.72/x
  3. Step 3: Cross multiply
    221,648.00x = 305,856.95 × 130,986.72
  4. Step 4: Simplify right side
    221,648.00x = 40,063,198,014.77
  5. Step 5: Solve for x
    x = 40,063,198,014.77/221,648.00
  6. Step 6: Final answer
    x = 180,751.46

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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.