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Finding the Fourth Proportional to 354,297, 488,949.30 and 203,403.72

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Solution

The fourth proportional to 354,297, 488,949.30 and 203,403.72 is: 280,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,297 : 488,949.30 = 203,403.72 : x
  2. Step 2: Convert to fraction form
    354,297/488,949.30 = 203,403.72/x
  3. Step 3: Cross multiply
    354,297x = 488,949.30 × 203,403.72
  4. Step 4: Simplify right side
    354,297x = 99,454,106,511.40
  5. Step 5: Solve for x
    x = 99,454,106,511.40/354,297
  6. Step 6: Final answer
    x = 280,708.29

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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.