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Finding the Fourth Proportional to 326,856.32, 490,432.34 and 166,849.60

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Solution

The fourth proportional to 326,856.32, 490,432.34 and 166,849.60 is: 250,349.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,856.32 : 490,432.34 = 166,849.60 : x
  2. Step 2: Convert to fraction form
    326,856.32/490,432.34 = 166,849.60/x
  3. Step 3: Cross multiply
    326,856.32x = 490,432.34 × 166,849.60
  4. Step 4: Simplify right side
    326,856.32x = 81,828,439,756.06
  5. Step 5: Solve for x
    x = 81,828,439,756.06/326,856.32
  6. Step 6: Final answer
    x = 250,349.88

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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.