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Finding the Fourth Proportional to 251,236.60, 376,271.70 and 171,921.40

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Solution

The fourth proportional to 251,236.60, 376,271.70 and 171,921.40 is: 257,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,236.60 : 376,271.70 = 171,921.40 : x
  2. Step 2: Convert to fraction form
    251,236.60/376,271.70 = 171,921.40/x
  3. Step 3: Cross multiply
    251,236.60x = 376,271.70 × 171,921.40
  4. Step 4: Simplify right side
    251,236.60x = 64,689,157,444.38
  5. Step 5: Solve for x
    x = 64,689,157,444.38/251,236.60
  6. Step 6: Final answer
    x = 257,483.02

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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.