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Finding the Fourth Proportional to 351,699.54, 485,290.51 and 208,436.46

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Solution

The fourth proportional to 351,699.54, 485,290.51 and 208,436.46 is: 287,609.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,699.54 : 485,290.51 = 208,436.46 : x
  2. Step 2: Convert to fraction form
    351,699.54/485,290.51 = 208,436.46/x
  3. Step 3: Cross multiply
    351,699.54x = 485,290.51 × 208,436.46
  4. Step 4: Simplify right side
    351,699.54x = 101,152,235,976.00
  5. Step 5: Solve for x
    x = 101,152,235,976.00/351,699.54
  6. Step 6: Final answer
    x = 287,609.80

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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.