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Finding the Fourth Proportional to 221,628.39, 332,442.57 and 55,416.39

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Solution

The fourth proportional to 221,628.39, 332,442.57 and 55,416.39 is: 83,124.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,628.39 : 332,442.57 = 55,416.39 : x
  2. Step 2: Convert to fraction form
    221,628.39/332,442.57 = 55,416.39/x
  3. Step 3: Cross multiply
    221,628.39x = 332,442.57 × 55,416.39
  4. Step 4: Simplify right side
    221,628.39x = 18,422,767,111.72
  5. Step 5: Solve for x
    x = 18,422,767,111.72/221,628.39
  6. Step 6: Final answer
    x = 83,124.58

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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.