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Finding the Fourth Proportional to 328,015.95, 490,226.72 and 239,455.95

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Solution

The fourth proportional to 328,015.95, 490,226.72 and 239,455.95 is: 357,871.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,015.95 : 490,226.72 = 239,455.95 : x
  2. Step 2: Convert to fraction form
    328,015.95/490,226.72 = 239,455.95/x
  3. Step 3: Cross multiply
    328,015.95x = 490,226.72 × 239,455.95
  4. Step 4: Simplify right side
    328,015.95x = 117,387,701,917.35
  5. Step 5: Solve for x
    x = 117,387,701,917.35/328,015.95
  6. Step 6: Final answer
    x = 357,871.94

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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.