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Finding the Fourth Proportional to 325,616.60, 487,768.80 and 219,328.40

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Solution

The fourth proportional to 325,616.60, 487,768.80 and 219,328.40 is: 328,550.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,616.60 : 487,768.80 = 219,328.40 : x
  2. Step 2: Convert to fraction form
    325,616.60/487,768.80 = 219,328.40/x
  3. Step 3: Cross multiply
    325,616.60x = 487,768.80 × 219,328.40
  4. Step 4: Simplify right side
    325,616.60x = 106,981,550,473.92
  5. Step 5: Solve for x
    x = 106,981,550,473.92/325,616.60
  6. Step 6: Final answer
    x = 328,550.67

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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.