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Finding the Fourth Proportional to 499,425.67, 689,210.09 and 273,071.17

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Solution

The fourth proportional to 499,425.67, 689,210.09 and 273,071.17 is: 376,839.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,425.67 : 689,210.09 = 273,071.17 : x
  2. Step 2: Convert to fraction form
    499,425.67/689,210.09 = 273,071.17/x
  3. Step 3: Cross multiply
    499,425.67x = 689,210.09 × 273,071.17
  4. Step 4: Simplify right side
    499,425.67x = 188,203,406,172.28
  5. Step 5: Solve for x
    x = 188,203,406,172.28/499,425.67
  6. Step 6: Final answer
    x = 376,839.67

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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.