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Finding the Fourth Proportional to 260,084.76, 390,087.30 and 82,568.76

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Solution

The fourth proportional to 260,084.76, 390,087.30 and 82,568.76 is: 123,840.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,084.76 : 390,087.30 = 82,568.76 : x
  2. Step 2: Convert to fraction form
    260,084.76/390,087.30 = 82,568.76/x
  3. Step 3: Cross multiply
    260,084.76x = 390,087.30 × 82,568.76
  4. Step 4: Simplify right side
    260,084.76x = 32,209,024,652.75
  5. Step 5: Solve for x
    x = 32,209,024,652.75/260,084.76
  6. Step 6: Final answer
    x = 123,840.49

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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.