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Finding the Fourth Proportional to 281,023.56, 421,473.24 and 81,300.24

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Solution

The fourth proportional to 281,023.56, 421,473.24 and 81,300.24 is: 121,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,023.56 : 421,473.24 = 81,300.24 : x
  2. Step 2: Convert to fraction form
    281,023.56/421,473.24 = 81,300.24/x
  3. Step 3: Cross multiply
    281,023.56x = 421,473.24 × 81,300.24
  4. Step 4: Simplify right side
    281,023.56x = 34,265,875,565.58
  5. Step 5: Solve for x
    x = 34,265,875,565.58/281,023.56
  6. Step 6: Final answer
    x = 121,932.39

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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.