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Finding the Fourth Proportional to 499,374.95, 689,139.84 and 273,020.45

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Solution

The fourth proportional to 499,374.95, 689,139.84 and 273,020.45 is: 376,769.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,374.95 : 689,139.84 = 273,020.45 : x
  2. Step 2: Convert to fraction form
    499,374.95/689,139.84 = 273,020.45/x
  3. Step 3: Cross multiply
    499,374.95x = 689,139.84 × 273,020.45
  4. Step 4: Simplify right side
    499,374.95x = 188,149,265,784.03
  5. Step 5: Solve for x
    x = 188,149,265,784.03/499,374.95
  6. Step 6: Final answer
    x = 376,769.53

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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.