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Finding the Fourth Proportional to 499,975.20, 689,960.16 and 273,618

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Solution

The fourth proportional to 499,975.20, 689,960.16 and 273,618 is: 377,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,975.20 : 689,960.16 = 273,618 : x
  2. Step 2: Convert to fraction form
    499,975.20/689,960.16 = 273,618/x
  3. Step 3: Cross multiply
    499,975.20x = 689,960.16 × 273,618
  4. Step 4: Simplify right side
    499,975.20x = 188,785,519,058.88
  5. Step 5: Solve for x
    x = 188,785,519,058.88/499,975.20
  6. Step 6: Final answer
    x = 377,589.77

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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.