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Finding the Fourth Proportional to 281,193.60, 421,790.40 and 259,542.30

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Solution

The fourth proportional to 281,193.60, 421,790.40 and 259,542.30 is: 389,313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,193.60 : 421,790.40 = 259,542.30 : x
  2. Step 2: Convert to fraction form
    281,193.60/421,790.40 = 259,542.30/x
  3. Step 3: Cross multiply
    281,193.60x = 421,790.40 × 259,542.30
  4. Step 4: Simplify right side
    281,193.60x = 109,472,450,533.92
  5. Step 5: Solve for x
    x = 109,472,450,533.92/281,193.60
  6. Step 6: Final answer
    x = 389,313.45

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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.