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Finding the Fourth Proportional to 328,670.60, 492,717.90 and 223,147.40

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Solution

The fourth proportional to 328,670.60, 492,717.90 and 223,147.40 is: 334,525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,670.60 : 492,717.90 = 223,147.40 : x
  2. Step 2: Convert to fraction form
    328,670.60/492,717.90 = 223,147.40/x
  3. Step 3: Cross multiply
    328,670.60x = 492,717.90 × 223,147.40
  4. Step 4: Simplify right side
    328,670.60x = 109,948,718,318.46
  5. Step 5: Solve for x
    x = 109,948,718,318.46/328,670.60
  6. Step 6: Final answer
    x = 334,525.57

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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.