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Finding the Fourth Proportional to 260,147.75, 390,369.25 and 102,486.92

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Solution

The fourth proportional to 260,147.75, 390,369.25 and 102,486.92 is: 153,788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,147.75 : 390,369.25 = 102,486.92 : x
  2. Step 2: Convert to fraction form
    260,147.75/390,369.25 = 102,486.92/x
  3. Step 3: Cross multiply
    260,147.75x = 390,369.25 × 102,486.92
  4. Step 4: Simplify right side
    260,147.75x = 40,007,742,179.06
  5. Step 5: Solve for x
    x = 40,007,742,179.06/260,147.75
  6. Step 6: Final answer
    x = 153,788.54

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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.