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Finding the Fourth Proportional to 260,482.05, 390,729.92 and 70,944.03

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Solution

The fourth proportional to 260,482.05, 390,729.92 and 70,944.03 is: 106,417.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,482.05 : 390,729.92 = 70,944.03 : x
  2. Step 2: Convert to fraction form
    260,482.05/390,729.92 = 70,944.03/x
  3. Step 3: Cross multiply
    260,482.05x = 390,729.92 × 70,944.03
  4. Step 4: Simplify right side
    260,482.05x = 27,719,954,811.66
  5. Step 5: Solve for x
    x = 27,719,954,811.66/260,482.05
  6. Step 6: Final answer
    x = 106,417.91

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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.