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Finding the Fourth Proportional to 328,096.60, 492,144.90 and 221,808.40

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Solution

The fourth proportional to 328,096.60, 492,144.90 and 221,808.40 is: 332,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,096.60 : 492,144.90 = 221,808.40 : x
  2. Step 2: Convert to fraction form
    328,096.60/492,144.90 = 221,808.40/x
  3. Step 3: Cross multiply
    328,096.60x = 492,144.90 × 221,808.40
  4. Step 4: Simplify right side
    328,096.60x = 109,161,872,837.16
  5. Step 5: Solve for x
    x = 109,161,872,837.16/328,096.60
  6. Step 6: Final answer
    x = 332,712.60

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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.