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Finding the Fourth Proportional to 208,259.62, 312,401.55 and 58,511.59

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Solution

The fourth proportional to 208,259.62, 312,401.55 and 58,511.59 is: 87,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,259.62 : 312,401.55 = 58,511.59 : x
  2. Step 2: Convert to fraction form
    208,259.62/312,401.55 = 58,511.59/x
  3. Step 3: Cross multiply
    208,259.62x = 312,401.55 × 58,511.59
  4. Step 4: Simplify right side
    208,259.62x = 18,279,111,408.96
  5. Step 5: Solve for x
    x = 18,279,111,408.96/208,259.62
  6. Step 6: Final answer
    x = 87,770.79

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1.5x scale

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.