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Finding the Fourth Proportional to 348,590.60, 481,493.49 and 287,557.95

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Solution

The fourth proportional to 348,590.60, 481,493.49 and 287,557.95 is: 397,191.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,590.60 : 481,493.49 = 287,557.95 : x
  2. Step 2: Convert to fraction form
    348,590.60/481,493.49 = 287,557.95/x
  3. Step 3: Cross multiply
    348,590.60x = 481,493.49 × 287,557.95
  4. Step 4: Simplify right side
    348,590.60x = 138,457,280,922.75
  5. Step 5: Solve for x
    x = 138,457,280,922.75/348,590.60
  6. Step 6: Final answer
    x = 397,191.67

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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.