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Finding the Fourth Proportional to 299,064.48, 448,595.92 and 74,420.72

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Solution

The fourth proportional to 299,064.48, 448,595.92 and 74,420.72 is: 111,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,064.48 : 448,595.92 = 74,420.72 : x
  2. Step 2: Convert to fraction form
    299,064.48/448,595.92 = 74,420.72/x
  3. Step 3: Cross multiply
    299,064.48x = 448,595.92 × 74,420.72
  4. Step 4: Simplify right side
    299,064.48x = 33,384,831,355.46
  5. Step 5: Solve for x
    x = 33,384,831,355.46/299,064.48
  6. Step 6: Final answer
    x = 111,630.88

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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.