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Finding the Fourth Proportional to 260,703.76, 390,451.56 and 222,336.40

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Solution

The fourth proportional to 260,703.76, 390,451.56 and 222,336.40 is: 332,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,703.76 : 390,451.56 = 222,336.40 : x
  2. Step 2: Convert to fraction form
    260,703.76/390,451.56 = 222,336.40/x
  3. Step 3: Cross multiply
    260,703.76x = 390,451.56 × 222,336.40
  4. Step 4: Simplify right side
    260,703.76x = 86,811,594,224.78
  5. Step 5: Solve for x
    x = 86,811,594,224.78/260,703.76
  6. Step 6: Final answer
    x = 332,989.42

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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.