Home / 218,435.60-327,653.40-85,320.20

Finding the Fourth Proportional to 218,435.60, 327,653.40 and 85,320.20

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Solution

The fourth proportional to 218,435.60, 327,653.40 and 85,320.20 is: 127,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,435.60 : 327,653.40 = 85,320.20 : x
  2. Step 2: Convert to fraction form
    218,435.60/327,653.40 = 85,320.20/x
  3. Step 3: Cross multiply
    218,435.60x = 327,653.40 × 85,320.20
  4. Step 4: Simplify right side
    218,435.60x = 27,955,453,618.68
  5. Step 5: Solve for x
    x = 27,955,453,618.68/218,435.60
  6. Step 6: Final answer
    x = 127,980.30

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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.