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Finding the Fourth Proportional to 303,765.15, 455,429.03 and 170,686.20

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Solution

The fourth proportional to 303,765.15, 455,429.03 and 170,686.20 is: 255,906.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,765.15 : 455,429.03 = 170,686.20 : x
  2. Step 2: Convert to fraction form
    303,765.15/455,429.03 = 170,686.20/x
  3. Step 3: Cross multiply
    303,765.15x = 455,429.03 × 170,686.20
  4. Step 4: Simplify right side
    303,765.15x = 77,735,449,646.96
  5. Step 5: Solve for x
    x = 77,735,449,646.96/303,765.15
  6. Step 6: Final answer
    x = 255,906.41

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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.