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Finding the Fourth Proportional to 259,886.60, 389,538.30 and 147,620.60

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Solution

The fourth proportional to 259,886.60, 389,538.30 and 147,620.60 is: 221,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,886.60 : 389,538.30 = 147,620.60 : x
  2. Step 2: Convert to fraction form
    259,886.60/389,538.30 = 147,620.60/x
  3. Step 3: Cross multiply
    259,886.60x = 389,538.30 × 147,620.60
  4. Step 4: Simplify right side
    259,886.60x = 57,503,877,568.98
  5. Step 5: Solve for x
    x = 57,503,877,568.98/259,886.60
  6. Step 6: Final answer
    x = 221,265.27

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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.