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Finding the Fourth Proportional to 308,402.69, 461,885.48 and 299,889.78

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Solution

The fourth proportional to 308,402.69, 461,885.48 and 299,889.78 is: 449,135.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,402.69 : 461,885.48 = 299,889.78 : x
  2. Step 2: Convert to fraction form
    308,402.69/461,885.48 = 299,889.78/x
  3. Step 3: Cross multiply
    308,402.69x = 461,885.48 × 299,889.78
  4. Step 4: Simplify right side
    308,402.69x = 138,514,733,482.95
  5. Step 5: Solve for x
    x = 138,514,733,482.95/308,402.69
  6. Step 6: Final answer
    x = 449,135.95

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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.