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Finding the Fourth Proportional to 499,393.38, 689,165.74 and 273,038.88

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Solution

The fourth proportional to 499,393.38, 689,165.74 and 273,038.88 is: 376,795.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,393.38 : 689,165.74 = 273,038.88 : x
  2. Step 2: Convert to fraction form
    499,393.38/689,165.74 = 273,038.88/x
  3. Step 3: Cross multiply
    499,393.38x = 689,165.74 × 273,038.88
  4. Step 4: Simplify right side
    499,393.38x = 188,169,041,783.97
  5. Step 5: Solve for x
    x = 188,169,041,783.97/499,393.38
  6. Step 6: Final answer
    x = 376,795.23

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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.