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Finding the Fourth Proportional to 339,809.75, 469,008.81 and 215,550.35

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Solution

The fourth proportional to 339,809.75, 469,008.81 and 215,550.35 is: 297,504.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,809.75 : 469,008.81 = 215,550.35 : x
  2. Step 2: Convert to fraction form
    339,809.75/469,008.81 = 215,550.35/x
  3. Step 3: Cross multiply
    339,809.75x = 469,008.81 × 215,550.35
  4. Step 4: Simplify right side
    339,809.75x = 101,095,013,916.95
  5. Step 5: Solve for x
    x = 101,095,013,916.95/339,809.75
  6. Step 6: Final answer
    x = 297,504.75

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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.