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Finding the Fourth Proportional to 353,363.75, 487,673.60 and 208,170.87

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Solution

The fourth proportional to 353,363.75, 487,673.60 and 208,170.87 is: 287,294.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,363.75 : 487,673.60 = 208,170.87 : x
  2. Step 2: Convert to fraction form
    353,363.75/487,673.60 = 208,170.87/x
  3. Step 3: Cross multiply
    353,363.75x = 487,673.60 × 208,170.87
  4. Step 4: Simplify right side
    353,363.75x = 101,519,437,588.03
  5. Step 5: Solve for x
    x = 101,519,437,588.03/353,363.75
  6. Step 6: Final answer
    x = 287,294.43

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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.