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Finding the Fourth Proportional to 219,509.76, 329,230.16 and 69,730.32

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Solution

The fourth proportional to 219,509.76, 329,230.16 and 69,730.32 is: 104,584.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,509.76 : 329,230.16 = 69,730.32 : x
  2. Step 2: Convert to fraction form
    219,509.76/329,230.16 = 69,730.32/x
  3. Step 3: Cross multiply
    219,509.76x = 329,230.16 × 69,730.32
  4. Step 4: Simplify right side
    219,509.76x = 22,957,324,410.45
  5. Step 5: Solve for x
    x = 22,957,324,410.45/219,509.76
  6. Step 6: Final answer
    x = 104,584.53

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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.