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Finding the Fourth Proportional to 245,450.61, 367,585.43 and 139,949.73

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Solution

The fourth proportional to 245,450.61, 367,585.43 and 139,949.73 is: 209,587.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,450.61 : 367,585.43 = 139,949.73 : x
  2. Step 2: Convert to fraction form
    245,450.61/367,585.43 = 139,949.73/x
  3. Step 3: Cross multiply
    245,450.61x = 367,585.43 × 139,949.73
  4. Step 4: Simplify right side
    245,450.61x = 51,443,480,980.69
  5. Step 5: Solve for x
    x = 51,443,480,980.69/245,450.61
  6. Step 6: Final answer
    x = 209,587.91

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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.