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Finding the Fourth Proportional to 354,135, 488,726.82 and 203,241.72

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Solution

The fourth proportional to 354,135, 488,726.82 and 203,241.72 is: 280,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,135 : 488,726.82 = 203,241.72 : x
  2. Step 2: Convert to fraction form
    354,135/488,726.82 = 203,241.72/x
  3. Step 3: Cross multiply
    354,135x = 488,726.82 × 203,241.72
  4. Step 4: Simplify right side
    354,135x = 99,329,679,506.93
  5. Step 5: Solve for x
    x = 99,329,679,506.93/354,135
  6. Step 6: Final answer
    x = 280,485.35

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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.