Home / 320,408.76-442,309.08-205,853.70

Finding the Fourth Proportional to 320,408.76, 442,309.08 and 205,853.70

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Solution

The fourth proportional to 320,408.76, 442,309.08 and 205,853.70 is: 284,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,408.76 : 442,309.08 = 205,853.70 : x
  2. Step 2: Convert to fraction form
    320,408.76/442,309.08 = 205,853.70/x
  3. Step 3: Cross multiply
    320,408.76x = 442,309.08 × 205,853.70
  4. Step 4: Simplify right side
    320,408.76x = 91,050,960,661.60
  5. Step 5: Solve for x
    x = 91,050,960,661.60/320,408.76
  6. Step 6: Final answer
    x = 284,171.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.