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Finding the Fourth Proportional to 499,291.74, 689,034.74 and 303,060.43

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Solution

The fourth proportional to 499,291.74, 689,034.74 and 303,060.43 is: 418,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,291.74 : 689,034.74 = 303,060.43 : x
  2. Step 2: Convert to fraction form
    499,291.74/689,034.74 = 303,060.43/x
  3. Step 3: Cross multiply
    499,291.74x = 689,034.74 × 303,060.43
  4. Step 4: Simplify right side
    499,291.74x = 208,819,163,935.33
  5. Step 5: Solve for x
    x = 208,819,163,935.33/499,291.74
  6. Step 6: Final answer
    x = 418,230.76

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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.