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Finding the Fourth Proportional to 199,722.32, 299,483.12 and 66,555.92

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Solution

The fourth proportional to 199,722.32, 299,483.12 and 66,555.92 is: 99,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,722.32 : 299,483.12 = 66,555.92 : x
  2. Step 2: Convert to fraction form
    199,722.32/299,483.12 = 66,555.92/x
  3. Step 3: Cross multiply
    199,722.32x = 299,483.12 × 66,555.92
  4. Step 4: Simplify right side
    199,722.32x = 19,932,374,576.07
  5. Step 5: Solve for x
    x = 19,932,374,576.07/199,722.32
  6. Step 6: Final answer
    x = 99,800.44

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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.