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Finding the Fourth Proportional to 363,884.66, 545,223.57 and 221,298.65

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Solution

The fourth proportional to 363,884.66, 545,223.57 and 221,298.65 is: 331,581.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,884.66 : 545,223.57 = 221,298.65 : x
  2. Step 2: Convert to fraction form
    363,884.66/545,223.57 = 221,298.65/x
  3. Step 3: Cross multiply
    363,884.66x = 545,223.57 × 221,298.65
  4. Step 4: Simplify right side
    363,884.66x = 120,657,239,989.18
  5. Step 5: Solve for x
    x = 120,657,239,989.18/363,884.66
  6. Step 6: Final answer
    x = 331,581.00

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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.