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Finding the Fourth Proportional to 499,938.40, 689,912.40 and 273,587.68

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Solution

The fourth proportional to 499,938.40, 689,912.40 and 273,587.68 is: 377,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,938.40 : 689,912.40 = 273,587.68 : x
  2. Step 2: Convert to fraction form
    499,938.40/689,912.40 = 273,587.68/x
  3. Step 3: Cross multiply
    499,938.40x = 689,912.40 × 273,587.68
  4. Step 4: Simplify right side
    499,938.40x = 188,751,532,919.23
  5. Step 5: Solve for x
    x = 188,751,532,919.23/499,938.40
  6. Step 6: Final answer
    x = 377,549.58

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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.