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Finding the Fourth Proportional to 426,963.58, 639,889.72 and 173,947.72

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Solution

The fourth proportional to 426,963.58, 639,889.72 and 173,947.72 is: 260,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,963.58 : 639,889.72 = 173,947.72 : x
  2. Step 2: Convert to fraction form
    426,963.58/639,889.72 = 173,947.72/x
  3. Step 3: Cross multiply
    426,963.58x = 639,889.72 × 173,947.72
  4. Step 4: Simplify right side
    426,963.58x = 111,307,357,845.44
  5. Step 5: Solve for x
    x = 111,307,357,845.44/426,963.58
  6. Step 6: Final answer
    x = 260,695.20

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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.