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Finding the Fourth Proportional to 338,965.86, 508,615.65 and 239,763.54

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Solution

The fourth proportional to 338,965.86, 508,615.65 and 239,763.54 is: 359,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,965.86 : 508,615.65 = 239,763.54 : x
  2. Step 2: Convert to fraction form
    338,965.86/508,615.65 = 239,763.54/x
  3. Step 3: Cross multiply
    338,965.86x = 508,615.65 × 239,763.54
  4. Step 4: Simplify right side
    338,965.86x = 121,947,488,743.40
  5. Step 5: Solve for x
    x = 121,947,488,743.40/338,965.86
  6. Step 6: Final answer
    x = 359,763.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.