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Finding the Fourth Proportional to 299,215.81, 448,435.93 and 121,516.39

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Solution

The fourth proportional to 299,215.81, 448,435.93 and 121,516.39 is: 182,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,215.81 : 448,435.93 = 121,516.39 : x
  2. Step 2: Convert to fraction form
    299,215.81/448,435.93 = 121,516.39/x
  3. Step 3: Cross multiply
    299,215.81x = 448,435.93 × 121,516.39
  4. Step 4: Simplify right side
    299,215.81x = 54,492,315,359.89
  5. Step 5: Solve for x
    x = 54,492,315,359.89/299,215.81
  6. Step 6: Final answer
    x = 182,117.10

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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.