Home / 208,453.96-312,725.10-80,373.52

Finding the Fourth Proportional to 208,453.96, 312,725.10 and 80,373.52

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Solution

The fourth proportional to 208,453.96, 312,725.10 and 80,373.52 is: 120,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,453.96 : 312,725.10 = 80,373.52 : x
  2. Step 2: Convert to fraction form
    208,453.96/312,725.10 = 80,373.52/x
  3. Step 3: Cross multiply
    208,453.96x = 312,725.10 × 80,373.52
  4. Step 4: Simplify right side
    208,453.96x = 25,134,817,079.35
  5. Step 5: Solve for x
    x = 25,134,817,079.35/208,453.96
  6. Step 6: Final answer
    x = 120,577.31

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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.