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Finding the Fourth Proportional to 208,359.88, 287,478.30 and 130,843.88

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Solution

The fourth proportional to 208,359.88, 287,478.30 and 130,843.88 is: 180,527.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,359.88 : 287,478.30 = 130,843.88 : x
  2. Step 2: Convert to fraction form
    208,359.88/287,478.30 = 130,843.88/x
  3. Step 3: Cross multiply
    208,359.88x = 287,478.30 × 130,843.88
  4. Step 4: Simplify right side
    208,359.88x = 37,614,775,533.58
  5. Step 5: Solve for x
    x = 37,614,775,533.58/208,359.88
  6. Step 6: Final answer
    x = 180,527.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.