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Finding the Fourth Proportional to 499,572.36, 689,415.30 and 273,213

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Solution

The fourth proportional to 499,572.36, 689,415.30 and 273,213 is: 377,036.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,572.36 : 689,415.30 = 273,213 : x
  2. Step 2: Convert to fraction form
    499,572.36/689,415.30 = 273,213/x
  3. Step 3: Cross multiply
    499,572.36x = 689,415.30 × 273,213
  4. Step 4: Simplify right side
    499,572.36x = 188,357,222,358.90
  5. Step 5: Solve for x
    x = 188,357,222,358.90/499,572.36
  6. Step 6: Final answer
    x = 377,036.92

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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.