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Finding the Fourth Proportional to 260,685.16, 391,090.16 and 108,797.78

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Solution

The fourth proportional to 260,685.16, 391,090.16 and 108,797.78 is: 163,222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,685.16 : 391,090.16 = 108,797.78 : x
  2. Step 2: Convert to fraction form
    260,685.16/391,090.16 = 108,797.78/x
  3. Step 3: Cross multiply
    260,685.16x = 391,090.16 × 108,797.78
  4. Step 4: Simplify right side
    260,685.16x = 42,549,742,284.57
  5. Step 5: Solve for x
    x = 42,549,742,284.57/260,685.16
  6. Step 6: Final answer
    x = 163,222.73

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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.