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Finding the Fourth Proportional to 220,751.79, 304,745.46 and 148,128.70

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Solution

The fourth proportional to 220,751.79, 304,745.46 and 148,128.70 is: 204,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,751.79 : 304,745.46 = 148,128.70 : x
  2. Step 2: Convert to fraction form
    220,751.79/304,745.46 = 148,128.70/x
  3. Step 3: Cross multiply
    220,751.79x = 304,745.46 × 148,128.70
  4. Step 4: Simplify right side
    220,751.79x = 45,141,549,324.59
  5. Step 5: Solve for x
    x = 45,141,549,324.59/220,751.79
  6. Step 6: Final answer
    x = 204,490.07

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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.