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Finding the Fourth Proportional to 356,310.80, 534,465.84 and 145,949.12

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Solution

The fourth proportional to 356,310.80, 534,465.84 and 145,949.12 is: 218,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,310.80 : 534,465.84 = 145,949.12 : x
  2. Step 2: Convert to fraction form
    356,310.80/534,465.84 = 145,949.12/x
  3. Step 3: Cross multiply
    356,310.80x = 534,465.84 × 145,949.12
  4. Step 4: Simplify right side
    356,310.80x = 78,004,819,018.06
  5. Step 5: Solve for x
    x = 78,004,819,018.06/356,310.80
  6. Step 6: Final answer
    x = 218,923.53

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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.