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Finding the Fourth Proportional to 328,163.60, 492,245.40 and 178,864.40

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Solution

The fourth proportional to 328,163.60, 492,245.40 and 178,864.40 is: 268,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,163.60 : 492,245.40 = 178,864.40 : x
  2. Step 2: Convert to fraction form
    328,163.60/492,245.40 = 178,864.40/x
  3. Step 3: Cross multiply
    328,163.60x = 492,245.40 × 178,864.40
  4. Step 4: Simplify right side
    328,163.60x = 88,045,178,123.76
  5. Step 5: Solve for x
    x = 88,045,178,123.76/328,163.60
  6. Step 6: Final answer
    x = 268,296.60

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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.