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Finding the Fourth Proportional to 215,730.84, 323,742.06 and 75,490.68

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Solution

The fourth proportional to 215,730.84, 323,742.06 and 75,490.68 is: 113,287.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,730.84 : 323,742.06 = 75,490.68 : x
  2. Step 2: Convert to fraction form
    215,730.84/323,742.06 = 75,490.68/x
  3. Step 3: Cross multiply
    215,730.84x = 323,742.06 × 75,490.68
  4. Step 4: Simplify right side
    215,730.84x = 24,439,508,254.00
  5. Step 5: Solve for x
    x = 24,439,508,254.00/215,730.84
  6. Step 6: Final answer
    x = 113,287.04

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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.