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Finding the Fourth Proportional to 298,889.76, 448,340.78 and 121,275.29

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Solution

The fourth proportional to 298,889.76, 448,340.78 and 121,275.29 is: 181,915.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,889.76 : 448,340.78 = 121,275.29 : x
  2. Step 2: Convert to fraction form
    298,889.76/448,340.78 = 121,275.29/x
  3. Step 3: Cross multiply
    298,889.76x = 448,340.78 × 121,275.29
  4. Step 4: Simplify right side
    298,889.76x = 54,372,658,113.33
  5. Step 5: Solve for x
    x = 54,372,658,113.33/298,889.76
  6. Step 6: Final answer
    x = 181,915.43

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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.