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Finding the Fourth Proportional to 328,007.20, 452,899.20 and 322,777.60

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Solution

The fourth proportional to 328,007.20, 452,899.20 and 322,777.60 is: 445,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,007.20 : 452,899.20 = 322,777.60 : x
  2. Step 2: Convert to fraction form
    328,007.20/452,899.20 = 322,777.60/x
  3. Step 3: Cross multiply
    328,007.20x = 452,899.20 × 322,777.60
  4. Step 4: Simplify right side
    328,007.20x = 146,185,716,817.92
  5. Step 5: Solve for x
    x = 146,185,716,817.92/328,007.20
  6. Step 6: Final answer
    x = 445,678.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.