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Finding the Fourth Proportional to 363,895.76, 545,240.14 and 221,309.74

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Solution

The fourth proportional to 363,895.76, 545,240.14 and 221,309.74 is: 331,597.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,895.76 : 545,240.14 = 221,309.74 : x
  2. Step 2: Convert to fraction form
    363,895.76/545,240.14 = 221,309.74/x
  3. Step 3: Cross multiply
    363,895.76x = 545,240.14 × 221,309.74
  4. Step 4: Simplify right side
    363,895.76x = 120,666,953,620.96
  5. Step 5: Solve for x
    x = 120,666,953,620.96/363,895.76
  6. Step 6: Final answer
    x = 331,597.58

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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.