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Finding the Fourth Proportional to 171,579.68, 257,298.24 and 66,338

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Solution

The fourth proportional to 171,579.68, 257,298.24 and 66,338 is: 99,479.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,579.68 : 257,298.24 = 66,338 : x
  2. Step 2: Convert to fraction form
    171,579.68/257,298.24 = 66,338/x
  3. Step 3: Cross multiply
    171,579.68x = 257,298.24 × 66,338
  4. Step 4: Simplify right side
    171,579.68x = 17,068,650,645.12
  5. Step 5: Solve for x
    x = 17,068,650,645.12/171,579.68
  6. Step 6: Final answer
    x = 99,479.44

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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.