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Finding the Fourth Proportional to 328,543.80, 492,815.70 and 295,366.20

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Solution

The fourth proportional to 328,543.80, 492,815.70 and 295,366.20 is: 443,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,543.80 : 492,815.70 = 295,366.20 : x
  2. Step 2: Convert to fraction form
    328,543.80/492,815.70 = 295,366.20/x
  3. Step 3: Cross multiply
    328,543.80x = 492,815.70 × 295,366.20
  4. Step 4: Simplify right side
    328,543.80x = 145,561,100,609.34
  5. Step 5: Solve for x
    x = 145,561,100,609.34/328,543.80
  6. Step 6: Final answer
    x = 443,049.30

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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.