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Finding the Fourth Proportional to 260,065.60, 389,806.80 and 110,280.40

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Solution

The fourth proportional to 260,065.60, 389,806.80 and 110,280.40 is: 165,296.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,065.60 : 389,806.80 = 110,280.40 : x
  2. Step 2: Convert to fraction form
    260,065.60/389,806.80 = 110,280.40/x
  3. Step 3: Cross multiply
    260,065.60x = 389,806.80 × 110,280.40
  4. Step 4: Simplify right side
    260,065.60x = 42,988,049,826.72
  5. Step 5: Solve for x
    x = 42,988,049,826.72/260,065.60
  6. Step 6: Final answer
    x = 165,296.95

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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.