Home / 391,947.90-540,887.22-217,544.83

Finding the Fourth Proportional to 391,947.90, 540,887.22 and 217,544.83

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Solution

The fourth proportional to 391,947.90, 540,887.22 and 217,544.83 is: 300,211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,947.90 : 540,887.22 = 217,544.83 : x
  2. Step 2: Convert to fraction form
    391,947.90/540,887.22 = 217,544.83/x
  3. Step 3: Cross multiply
    391,947.90x = 540,887.22 × 217,544.83
  4. Step 4: Simplify right side
    391,947.90x = 117,667,219,000.18
  5. Step 5: Solve for x
    x = 117,667,219,000.18/391,947.90
  6. Step 6: Final answer
    x = 300,211.38

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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.