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Finding the Fourth Proportional to 288,929.60, 433,264.80 and 131,076.80

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Solution

The fourth proportional to 288,929.60, 433,264.80 and 131,076.80 is: 196,556.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,929.60 : 433,264.80 = 131,076.80 : x
  2. Step 2: Convert to fraction form
    288,929.60/433,264.80 = 131,076.80/x
  3. Step 3: Cross multiply
    288,929.60x = 433,264.80 × 131,076.80
  4. Step 4: Simplify right side
    288,929.60x = 56,790,963,536.64
  5. Step 5: Solve for x
    x = 56,790,963,536.64/288,929.60
  6. Step 6: Final answer
    x = 196,556.41

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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.