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Finding the Fourth Proportional to 328,982.40, 494,056.80 and 254,284.20

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Solution

The fourth proportional to 328,982.40, 494,056.80 and 254,284.20 is: 381,877.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,982.40 : 494,056.80 = 254,284.20 : x
  2. Step 2: Convert to fraction form
    328,982.40/494,056.80 = 254,284.20/x
  3. Step 3: Cross multiply
    328,982.40x = 494,056.80 × 254,284.20
  4. Step 4: Simplify right side
    328,982.40x = 125,630,838,142.56
  5. Step 5: Solve for x
    x = 125,630,838,142.56/328,982.40
  6. Step 6: Final answer
    x = 381,877.08

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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.