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Finding the Fourth Proportional to 341,780.64, 512,679.17 and 105,125.37

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Solution

The fourth proportional to 341,780.64, 512,679.17 and 105,125.37 is: 157,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,780.64 : 512,679.17 = 105,125.37 : x
  2. Step 2: Convert to fraction form
    341,780.64/512,679.17 = 105,125.37/x
  3. Step 3: Cross multiply
    341,780.64x = 512,679.17 × 105,125.37
  4. Step 4: Simplify right side
    341,780.64x = 53,895,587,437.54
  5. Step 5: Solve for x
    x = 53,895,587,437.54/341,780.64
  6. Step 6: Final answer
    x = 157,690.58

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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.