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Finding the Fourth Proportional to 306,653.54, 423,181.90 and 170,684.56

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Solution

The fourth proportional to 306,653.54, 423,181.90 and 170,684.56 is: 235,544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,653.54 : 423,181.90 = 170,684.56 : x
  2. Step 2: Convert to fraction form
    306,653.54/423,181.90 = 170,684.56/x
  3. Step 3: Cross multiply
    306,653.54x = 423,181.90 × 170,684.56
  4. Step 4: Simplify right side
    306,653.54x = 72,230,614,763.40
  5. Step 5: Solve for x
    x = 72,230,614,763.40/306,653.54
  6. Step 6: Final answer
    x = 235,544.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.