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Finding the Fourth Proportional to 215,671.83, 323,287.43 and 75,315.03

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Solution

The fourth proportional to 215,671.83, 323,287.43 and 75,315.03 is: 112,895.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,671.83 : 323,287.43 = 75,315.03 : x
  2. Step 2: Convert to fraction form
    215,671.83/323,287.43 = 75,315.03/x
  3. Step 3: Cross multiply
    215,671.83x = 323,287.43 × 75,315.03
  4. Step 4: Simplify right side
    215,671.83x = 24,348,402,112.50
  5. Step 5: Solve for x
    x = 24,348,402,112.50/215,671.83
  6. Step 6: Final answer
    x = 112,895.61

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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.