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Finding the Fourth Proportional to 328,015.56, 490,226.15 and 239,455.56

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Solution

The fourth proportional to 328,015.56, 490,226.15 and 239,455.56 is: 357,871.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,015.56 : 490,226.15 = 239,455.56 : x
  2. Step 2: Convert to fraction form
    328,015.56/490,226.15 = 239,455.56/x
  3. Step 3: Cross multiply
    328,015.56x = 490,226.15 × 239,455.56
  4. Step 4: Simplify right side
    328,015.56x = 117,387,377,274.89
  5. Step 5: Solve for x
    x = 117,387,377,274.89/328,015.56
  6. Step 6: Final answer
    x = 357,871.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.