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Finding the Fourth Proportional to 323,140.76, 445,948.80 and 179,909.78

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Solution

The fourth proportional to 323,140.76, 445,948.80 and 179,909.78 is: 248,283.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,140.76 : 445,948.80 = 179,909.78 : x
  2. Step 2: Convert to fraction form
    323,140.76/445,948.80 = 179,909.78/x
  3. Step 3: Cross multiply
    323,140.76x = 445,948.80 × 179,909.78
  4. Step 4: Simplify right side
    323,140.76x = 80,230,550,499.26
  5. Step 5: Solve for x
    x = 80,230,550,499.26/323,140.76
  6. Step 6: Final answer
    x = 248,283.60

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1.5x scale

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.