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Finding the Fourth Proportional to 325,615.80, 488,423.70 and 231,137.40

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Solution

The fourth proportional to 325,615.80, 488,423.70 and 231,137.40 is: 346,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,615.80 : 488,423.70 = 231,137.40 : x
  2. Step 2: Convert to fraction form
    325,615.80/488,423.70 = 231,137.40/x
  3. Step 3: Cross multiply
    325,615.80x = 488,423.70 × 231,137.40
  4. Step 4: Simplify right side
    325,615.80x = 112,892,984,116.38
  5. Step 5: Solve for x
    x = 112,892,984,116.38/325,615.80
  6. Step 6: Final answer
    x = 346,706.10

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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.