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Finding the Fourth Proportional to 288,290.50, 432,437.27 and 189,078.95

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Solution

The fourth proportional to 288,290.50, 432,437.27 and 189,078.95 is: 283,619.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,290.50 : 432,437.27 = 189,078.95 : x
  2. Step 2: Convert to fraction form
    288,290.50/432,437.27 = 189,078.95/x
  3. Step 3: Cross multiply
    288,290.50x = 432,437.27 × 189,078.95
  4. Step 4: Simplify right side
    288,290.50x = 81,764,784,952.47
  5. Step 5: Solve for x
    x = 81,764,784,952.47/288,290.50
  6. Step 6: Final answer
    x = 283,619.42

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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.