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Finding the Fourth Proportional to 499,289.50, 689,021.97 and 272,935

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Solution

The fourth proportional to 499,289.50, 689,021.97 and 272,935 is: 376,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,289.50 : 689,021.97 = 272,935 : x
  2. Step 2: Convert to fraction form
    499,289.50/689,021.97 = 272,935/x
  3. Step 3: Cross multiply
    499,289.50x = 689,021.97 × 272,935
  4. Step 4: Simplify right side
    499,289.50x = 188,058,211,381.95
  5. Step 5: Solve for x
    x = 188,058,211,381.95/499,289.50
  6. Step 6: Final answer
    x = 376,651.64

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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.