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Finding the Fourth Proportional to 303,480.90, 455,221.35 and 146,016.90

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Solution

The fourth proportional to 303,480.90, 455,221.35 and 146,016.90 is: 219,025.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,480.90 : 455,221.35 = 146,016.90 : x
  2. Step 2: Convert to fraction form
    303,480.90/455,221.35 = 146,016.90/x
  3. Step 3: Cross multiply
    303,480.90x = 455,221.35 × 146,016.90
  4. Step 4: Simplify right side
    303,480.90x = 66,470,010,340.82
  5. Step 5: Solve for x
    x = 66,470,010,340.82/303,480.90
  6. Step 6: Final answer
    x = 219,025.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.