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Finding the Fourth Proportional to 328,069.60, 491,715.60 and 170,216.80

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Solution

The fourth proportional to 328,069.60, 491,715.60 and 170,216.80 is: 255,123.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,069.60 : 491,715.60 = 170,216.80 : x
  2. Step 2: Convert to fraction form
    328,069.60/491,715.60 = 170,216.80/x
  3. Step 3: Cross multiply
    328,069.60x = 491,715.60 × 170,216.80
  4. Step 4: Simplify right side
    328,069.60x = 83,698,255,942.08
  5. Step 5: Solve for x
    x = 83,698,255,942.08/328,069.60
  6. Step 6: Final answer
    x = 255,123.47

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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.