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Finding the Fourth Proportional to 251,114.80, 376,672.20 and 156,636.40

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Solution

The fourth proportional to 251,114.80, 376,672.20 and 156,636.40 is: 234,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,114.80 : 376,672.20 = 156,636.40 : x
  2. Step 2: Convert to fraction form
    251,114.80/376,672.20 = 156,636.40/x
  3. Step 3: Cross multiply
    251,114.80x = 376,672.20 × 156,636.40
  4. Step 4: Simplify right side
    251,114.80x = 59,000,577,388.08
  5. Step 5: Solve for x
    x = 59,000,577,388.08/251,114.80
  6. Step 6: Final answer
    x = 234,954.60

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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.