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Finding the Fourth Proportional to 363,926.52, 545,889.78 and 142,155

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Solution

The fourth proportional to 363,926.52, 545,889.78 and 142,155 is: 213,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,926.52 : 545,889.78 = 142,155 : x
  2. Step 2: Convert to fraction form
    363,926.52/545,889.78 = 142,155/x
  3. Step 3: Cross multiply
    363,926.52x = 545,889.78 × 142,155
  4. Step 4: Simplify right side
    363,926.52x = 77,600,961,675.90
  5. Step 5: Solve for x
    x = 77,600,961,675.90/363,926.52
  6. Step 6: Final answer
    x = 213,232.50

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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.