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Finding the Fourth Proportional to 642,951.90, 964,467.95 and 169,637.72

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Solution

The fourth proportional to 642,951.90, 964,467.95 and 169,637.72 is: 254,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,951.90 : 964,467.95 = 169,637.72 : x
  2. Step 2: Convert to fraction form
    642,951.90/964,467.95 = 169,637.72/x
  3. Step 3: Cross multiply
    642,951.90x = 964,467.95 × 169,637.72
  4. Step 4: Simplify right side
    642,951.90x = 163,610,138,380.55
  5. Step 5: Solve for x
    x = 163,610,138,380.55/642,951.90
  6. Step 6: Final answer
    x = 254,467.15

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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.