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Finding the Fourth Proportional to 329,041.20, 493,221.60 and 178,964.40

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Solution

The fourth proportional to 329,041.20, 493,221.60 and 178,964.40 is: 268,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,041.20 : 493,221.60 = 178,964.40 : x
  2. Step 2: Convert to fraction form
    329,041.20/493,221.60 = 178,964.40/x
  3. Step 3: Cross multiply
    329,041.20x = 493,221.60 × 178,964.40
  4. Step 4: Simplify right side
    329,041.20x = 88,269,107,711.04
  5. Step 5: Solve for x
    x = 88,269,107,711.04/329,041.20
  6. Step 6: Final answer
    x = 268,261.57

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1.5x scale

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.