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Finding the Fourth Proportional to 328,487.70, 492,731.55 and 275,343.60

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Solution

The fourth proportional to 328,487.70, 492,731.55 and 275,343.60 is: 413,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,487.70 : 492,731.55 = 275,343.60 : x
  2. Step 2: Convert to fraction form
    328,487.70/492,731.55 = 275,343.60/x
  3. Step 3: Cross multiply
    328,487.70x = 492,731.55 × 275,343.60
  4. Step 4: Simplify right side
    328,487.70x = 135,670,478,810.58
  5. Step 5: Solve for x
    x = 135,670,478,810.58/328,487.70
  6. Step 6: Final answer
    x = 413,015.40

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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.