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Finding the Fourth Proportional to 354,226.34, 488,841.66 and 218,350.08

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Solution

The fourth proportional to 354,226.34, 488,841.66 and 218,350.08 is: 301,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,226.34 : 488,841.66 = 218,350.08 : x
  2. Step 2: Convert to fraction form
    354,226.34/488,841.66 = 218,350.08/x
  3. Step 3: Cross multiply
    354,226.34x = 488,841.66 × 218,350.08
  4. Step 4: Simplify right side
    354,226.34x = 106,738,614,954.22
  5. Step 5: Solve for x
    x = 106,738,614,954.22/354,226.34
  6. Step 6: Final answer
    x = 301,328.85

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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.