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Finding the Fourth Proportional to 265,749.80, 398,624.70 and 218,510.60

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Solution

The fourth proportional to 265,749.80, 398,624.70 and 218,510.60 is: 327,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,749.80 : 398,624.70 = 218,510.60 : x
  2. Step 2: Convert to fraction form
    265,749.80/398,624.70 = 218,510.60/x
  3. Step 3: Cross multiply
    265,749.80x = 398,624.70 × 218,510.60
  4. Step 4: Simplify right side
    265,749.80x = 87,103,722,371.82
  5. Step 5: Solve for x
    x = 87,103,722,371.82/265,749.80
  6. Step 6: Final answer
    x = 327,765.90

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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.