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Finding the Fourth Proportional to 298,790.66, 448,232.66 and 121,310.15

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Solution

The fourth proportional to 298,790.66, 448,232.66 and 121,310.15 is: 181,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,790.66 : 448,232.66 = 121,310.15 : x
  2. Step 2: Convert to fraction form
    298,790.66/448,232.66 = 121,310.15/x
  3. Step 3: Cross multiply
    298,790.66x = 448,232.66 × 121,310.15
  4. Step 4: Simplify right side
    298,790.66x = 54,375,168,371.79
  5. Step 5: Solve for x
    x = 54,375,168,371.79/298,790.66
  6. Step 6: Final answer
    x = 181,984.17

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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.