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Finding the Fourth Proportional to 260,543.70, 390,815.55 and 110,734.20

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Solution

The fourth proportional to 260,543.70, 390,815.55 and 110,734.20 is: 166,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,543.70 : 390,815.55 = 110,734.20 : x
  2. Step 2: Convert to fraction form
    260,543.70/390,815.55 = 110,734.20/x
  3. Step 3: Cross multiply
    260,543.70x = 390,815.55 × 110,734.20
  4. Step 4: Simplify right side
    260,543.70x = 43,276,647,276.81
  5. Step 5: Solve for x
    x = 43,276,647,276.81/260,543.70
  6. Step 6: Final answer
    x = 166,101.30

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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.