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Finding the Fourth Proportional to 219,315.20, 329,005.20 and 69,569.60

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Solution

The fourth proportional to 219,315.20, 329,005.20 and 69,569.60 is: 104,364.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,315.20 : 329,005.20 = 69,569.60 : x
  2. Step 2: Convert to fraction form
    219,315.20/329,005.20 = 69,569.60/x
  3. Step 3: Cross multiply
    219,315.20x = 329,005.20 × 69,569.60
  4. Step 4: Simplify right side
    219,315.20x = 22,888,760,161.92
  5. Step 5: Solve for x
    x = 22,888,760,161.92/219,315.20
  6. Step 6: Final answer
    x = 104,364.68

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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.