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Finding the Fourth Proportional to 199,388.82, 299,113.17 and 64,407.81

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Solution

The fourth proportional to 199,388.82, 299,113.17 and 64,407.81 is: 96,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,388.82 : 299,113.17 = 64,407.81 : x
  2. Step 2: Convert to fraction form
    199,388.82/299,113.17 = 64,407.81/x
  3. Step 3: Cross multiply
    199,388.82x = 299,113.17 × 64,407.81
  4. Step 4: Simplify right side
    199,388.82x = 19,265,224,221.86
  5. Step 5: Solve for x
    x = 19,265,224,221.86/199,388.82
  6. Step 6: Final answer
    x = 96,621.39

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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.