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Finding the Fourth Proportional to 368,894.80, 552,904.80 and 331,278.40

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Solution

The fourth proportional to 368,894.80, 552,904.80 and 331,278.40 is: 496,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,894.80 : 552,904.80 = 331,278.40 : x
  2. Step 2: Convert to fraction form
    368,894.80/552,904.80 = 331,278.40/x
  3. Step 3: Cross multiply
    368,894.80x = 552,904.80 × 331,278.40
  4. Step 4: Simplify right side
    368,894.80x = 183,165,417,496.32
  5. Step 5: Solve for x
    x = 183,165,417,496.32/368,894.80
  6. Step 6: Final answer
    x = 496,524.80

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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.