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Finding the Fourth Proportional to 328,645.40, 492,773.70 and 171,181.40

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Solution

The fourth proportional to 328,645.40, 492,773.70 and 171,181.40 is: 256,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,645.40 : 492,773.70 = 171,181.40 : x
  2. Step 2: Convert to fraction form
    328,645.40/492,773.70 = 171,181.40/x
  3. Step 3: Cross multiply
    328,645.40x = 492,773.70 × 171,181.40
  4. Step 4: Simplify right side
    328,645.40x = 84,353,691,849.18
  5. Step 5: Solve for x
    x = 84,353,691,849.18/328,645.40
  6. Step 6: Final answer
    x = 256,670.84

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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.