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Finding the Fourth Proportional to 363,139.74, 501,138.36 and 219,913.38

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Solution

The fourth proportional to 363,139.74, 501,138.36 and 219,913.38 is: 303,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,139.74 : 501,138.36 = 219,913.38 : x
  2. Step 2: Convert to fraction form
    363,139.74/501,138.36 = 219,913.38/x
  3. Step 3: Cross multiply
    363,139.74x = 501,138.36 × 219,913.38
  4. Step 4: Simplify right side
    363,139.74x = 110,207,030,595.26
  5. Step 5: Solve for x
    x = 110,207,030,595.26/363,139.74
  6. Step 6: Final answer
    x = 303,483.81

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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.