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Finding the Fourth Proportional to 354,315.88, 488,895.78 and 203,409.64

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Solution

The fourth proportional to 354,315.88, 488,895.78 and 203,409.64 is: 280,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,315.88 : 488,895.78 = 203,409.64 : x
  2. Step 2: Convert to fraction form
    354,315.88/488,895.78 = 203,409.64/x
  3. Step 3: Cross multiply
    354,315.88x = 488,895.78 × 203,409.64
  4. Step 4: Simplify right side
    354,315.88x = 99,446,114,607.32
  5. Step 5: Solve for x
    x = 99,446,114,607.32/354,315.88
  6. Step 6: Final answer
    x = 280,670.78

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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.