Home / 217,287.60-325,822.05-128,568.30

Finding the Fourth Proportional to 217,287.60, 325,822.05 and 128,568.30

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Solution

The fourth proportional to 217,287.60, 325,822.05 and 128,568.30 is: 192,787.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,287.60 : 325,822.05 = 128,568.30 : x
  2. Step 2: Convert to fraction form
    217,287.60/325,822.05 = 128,568.30/x
  3. Step 3: Cross multiply
    217,287.60x = 325,822.05 × 128,568.30
  4. Step 4: Simplify right side
    217,287.60x = 41,890,387,071.02
  5. Step 5: Solve for x
    x = 41,890,387,071.02/217,287.60
  6. Step 6: Final answer
    x = 192,787.75

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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.