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Finding the Fourth Proportional to 281,573.20, 422,481.30 and 163,345.60

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Solution

The fourth proportional to 281,573.20, 422,481.30 and 163,345.60 is: 245,088.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,573.20 : 422,481.30 = 163,345.60 : x
  2. Step 2: Convert to fraction form
    281,573.20/422,481.30 = 163,345.60/x
  3. Step 3: Cross multiply
    281,573.20x = 422,481.30 × 163,345.60
  4. Step 4: Simplify right side
    281,573.20x = 69,010,461,437.28
  5. Step 5: Solve for x
    x = 69,010,461,437.28/281,573.20
  6. Step 6: Final answer
    x = 245,088.88

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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.