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Finding the Fourth Proportional to 303,422.20, 455,133.30 and 163,454.20

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Solution

The fourth proportional to 303,422.20, 455,133.30 and 163,454.20 is: 245,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,422.20 : 455,133.30 = 163,454.20 : x
  2. Step 2: Convert to fraction form
    303,422.20/455,133.30 = 163,454.20/x
  3. Step 3: Cross multiply
    303,422.20x = 455,133.30 × 163,454.20
  4. Step 4: Simplify right side
    303,422.20x = 74,393,449,444.86
  5. Step 5: Solve for x
    x = 74,393,449,444.86/303,422.20
  6. Step 6: Final answer
    x = 245,181.30

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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.