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Finding the Fourth Proportional to 245,748.20, 368,330.70 and 127,358.60

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Solution

The fourth proportional to 245,748.20, 368,330.70 and 127,358.60 is: 190,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,748.20 : 368,330.70 = 127,358.60 : x
  2. Step 2: Convert to fraction form
    245,748.20/368,330.70 = 127,358.60/x
  3. Step 3: Cross multiply
    245,748.20x = 368,330.70 × 127,358.60
  4. Step 4: Simplify right side
    245,748.20x = 46,910,082,289.02
  5. Step 5: Solve for x
    x = 46,910,082,289.02/245,748.20
  6. Step 6: Final answer
    x = 190,886.78

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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.