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Finding the Fourth Proportional to 368,900.80, 552,913.80 and 331,284.40

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Solution

The fourth proportional to 368,900.80, 552,913.80 and 331,284.40 is: 496,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,900.80 : 552,913.80 = 331,284.40 : x
  2. Step 2: Convert to fraction form
    368,900.80/552,913.80 = 331,284.40/x
  3. Step 3: Cross multiply
    368,900.80x = 552,913.80 × 331,284.40
  4. Step 4: Simplify right side
    368,900.80x = 183,171,716,484.72
  5. Step 5: Solve for x
    x = 183,171,716,484.72/368,900.80
  6. Step 6: Final answer
    x = 496,533.80

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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.