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Finding the Fourth Proportional to 308,315.10, 462,165.45 and 141,812.70

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Solution

The fourth proportional to 308,315.10, 462,165.45 and 141,812.70 is: 212,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,315.10 : 462,165.45 = 141,812.70 : x
  2. Step 2: Convert to fraction form
    308,315.10/462,165.45 = 141,812.70/x
  3. Step 3: Cross multiply
    308,315.10x = 462,165.45 × 141,812.70
  4. Step 4: Simplify right side
    308,315.10x = 65,540,930,311.22
  5. Step 5: Solve for x
    x = 65,540,930,311.22/308,315.10
  6. Step 6: Final answer
    x = 212,577.75

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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.