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Finding the Fourth Proportional to 358,004.56, 493,923.33 and 221,989.56

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Solution

The fourth proportional to 358,004.56, 493,923.33 and 221,989.56 is: 306,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,004.56 : 493,923.33 = 221,989.56 : x
  2. Step 2: Convert to fraction form
    358,004.56/493,923.33 = 221,989.56/x
  3. Step 3: Cross multiply
    358,004.56x = 493,923.33 × 221,989.56
  4. Step 4: Simplify right side
    358,004.56x = 109,645,822,700.44
  5. Step 5: Solve for x
    x = 109,645,822,700.44/358,004.56
  6. Step 6: Final answer
    x = 306,269.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.