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Finding the Fourth Proportional to 363,908.52, 545,895.60 and 139,259.88

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Solution

The fourth proportional to 363,908.52, 545,895.60 and 139,259.88 is: 208,902.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,908.52 : 545,895.60 = 139,259.88 : x
  2. Step 2: Convert to fraction form
    363,908.52/545,895.60 = 139,259.88/x
  3. Step 3: Cross multiply
    363,908.52x = 545,895.60 × 139,259.88
  4. Step 4: Simplify right side
    363,908.52x = 76,021,355,748.53
  5. Step 5: Solve for x
    x = 76,021,355,748.53/363,908.52
  6. Step 6: Final answer
    x = 208,902.38

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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.