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Finding the Fourth Proportional to 450,673.20, 676,350 and 308,178

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Solution

The fourth proportional to 450,673.20, 676,350 and 308,178 is: 462,499.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,673.20 : 676,350 = 308,178 : x
  2. Step 2: Convert to fraction form
    450,673.20/676,350 = 308,178/x
  3. Step 3: Cross multiply
    450,673.20x = 676,350 × 308,178
  4. Step 4: Simplify right side
    450,673.20x = 208,436,190,300
  5. Step 5: Solve for x
    x = 208,436,190,300/450,673.20
  6. Step 6: Final answer
    x = 462,499.63

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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.