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Finding the Fourth Proportional to 252,491.50, 348,445.56 and 139,321.54

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Solution

The fourth proportional to 252,491.50, 348,445.56 and 139,321.54 is: 192,267.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,491.50 : 348,445.56 = 139,321.54 : x
  2. Step 2: Convert to fraction form
    252,491.50/348,445.56 = 139,321.54/x
  3. Step 3: Cross multiply
    252,491.50x = 348,445.56 × 139,321.54
  4. Step 4: Simplify right side
    252,491.50x = 48,545,972,025.36
  5. Step 5: Solve for x
    x = 48,545,972,025.36/252,491.50
  6. Step 6: Final answer
    x = 192,267.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.