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Finding the Fourth Proportional to 363,894.76, 545,238.64 and 221,308.74

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Solution

The fourth proportional to 363,894.76, 545,238.64 and 221,308.74 is: 331,596.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,894.76 : 545,238.64 = 221,308.74 : x
  2. Step 2: Convert to fraction form
    363,894.76/545,238.64 = 221,308.74/x
  3. Step 3: Cross multiply
    363,894.76x = 545,238.64 × 221,308.74
  4. Step 4: Simplify right side
    363,894.76x = 120,666,076,694.35
  5. Step 5: Solve for x
    x = 120,666,076,694.35/363,894.76
  6. Step 6: Final answer
    x = 331,596.08

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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.