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Finding the Fourth Proportional to 217,674.40, 326,074.20 and 146,815.60

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Solution

The fourth proportional to 217,674.40, 326,074.20 and 146,815.60 is: 219,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,674.40 : 326,074.20 = 146,815.60 : x
  2. Step 2: Convert to fraction form
    217,674.40/326,074.20 = 146,815.60/x
  3. Step 3: Cross multiply
    217,674.40x = 326,074.20 × 146,815.60
  4. Step 4: Simplify right side
    217,674.40x = 47,872,779,317.52
  5. Step 5: Solve for x
    x = 47,872,779,317.52/217,674.40
  6. Step 6: Final answer
    x = 219,928.39

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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.