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Finding the Fourth Proportional to 636,043.80, 954,187.19 and 209,702.46

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Solution

The fourth proportional to 636,043.80, 954,187.19 and 209,702.46 is: 314,593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,043.80 : 954,187.19 = 209,702.46 : x
  2. Step 2: Convert to fraction form
    636,043.80/954,187.19 = 209,702.46/x
  3. Step 3: Cross multiply
    636,043.80x = 954,187.19 × 209,702.46
  4. Step 4: Simplify right side
    636,043.80x = 200,095,401,043.49
  5. Step 5: Solve for x
    x = 200,095,401,043.49/636,043.80
  6. Step 6: Final answer
    x = 314,593.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.