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Finding the Fourth Proportional to 299,214.81, 448,434.43 and 121,515.39

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Solution

The fourth proportional to 299,214.81, 448,434.43 and 121,515.39 is: 182,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,214.81 : 448,434.43 = 121,515.39 : x
  2. Step 2: Convert to fraction form
    299,214.81/448,434.43 = 121,515.39/x
  3. Step 3: Cross multiply
    299,214.81x = 448,434.43 × 121,515.39
  4. Step 4: Simplify right side
    299,214.81x = 54,491,684,347.09
  5. Step 5: Solve for x
    x = 54,491,684,347.09/299,214.81
  6. Step 6: Final answer
    x = 182,115.60

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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.