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Finding the Fourth Proportional to 217,206.40, 325,809.60 and 112,230.40

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Solution

The fourth proportional to 217,206.40, 325,809.60 and 112,230.40 is: 168,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,206.40 : 325,809.60 = 112,230.40 : x
  2. Step 2: Convert to fraction form
    217,206.40/325,809.60 = 112,230.40/x
  3. Step 3: Cross multiply
    217,206.40x = 325,809.60 × 112,230.40
  4. Step 4: Simplify right side
    217,206.40x = 36,565,741,731.84
  5. Step 5: Solve for x
    x = 36,565,741,731.84/217,206.40
  6. Step 6: Final answer
    x = 168,345.60

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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.