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Finding the Fourth Proportional to 328,553.20, 492,714.60 and 170,729.20

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Solution

The fourth proportional to 328,553.20, 492,714.60 and 170,729.20 is: 256,033.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,553.20 : 492,714.60 = 170,729.20 : x
  2. Step 2: Convert to fraction form
    328,553.20/492,714.60 = 170,729.20/x
  3. Step 3: Cross multiply
    328,553.20x = 492,714.60 × 170,729.20
  4. Step 4: Simplify right side
    328,553.20x = 84,120,769,486.32
  5. Step 5: Solve for x
    x = 84,120,769,486.32/328,553.20
  6. Step 6: Final answer
    x = 256,033.94

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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.