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Finding the Fourth Proportional to 245,338.60, 367,748.70 and 139,930.60

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Solution

The fourth proportional to 245,338.60, 367,748.70 and 139,930.60 is: 209,748.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,338.60 : 367,748.70 = 139,930.60 : x
  2. Step 2: Convert to fraction form
    245,338.60/367,748.70 = 139,930.60/x
  3. Step 3: Cross multiply
    245,338.60x = 367,748.70 × 139,930.60
  4. Step 4: Simplify right side
    245,338.60x = 51,459,296,240.22
  5. Step 5: Solve for x
    x = 51,459,296,240.22/245,338.60
  6. Step 6: Final answer
    x = 209,748.06

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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.