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Finding the Fourth Proportional to 499,379.50, 689,143.71 and 273,025

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Solution

The fourth proportional to 499,379.50, 689,143.71 and 273,025 is: 376,774.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,379.50 : 689,143.71 = 273,025 : x
  2. Step 2: Convert to fraction form
    499,379.50/689,143.71 = 273,025/x
  3. Step 3: Cross multiply
    499,379.50x = 689,143.71 × 273,025
  4. Step 4: Simplify right side
    499,379.50x = 188,153,461,422.75
  5. Step 5: Solve for x
    x = 188,153,461,422.75/499,379.50
  6. Step 6: Final answer
    x = 376,774.50

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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.