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Finding the Fourth Proportional to 252,490.37, 348,437.90 and 139,313.12

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Solution

The fourth proportional to 252,490.37, 348,437.90 and 139,313.12 is: 192,252.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,490.37 : 348,437.90 = 139,313.12 : x
  2. Step 2: Convert to fraction form
    252,490.37/348,437.90 = 139,313.12/x
  3. Step 3: Cross multiply
    252,490.37x = 348,437.90 × 139,313.12
  4. Step 4: Simplify right side
    252,490.37x = 48,541,969,581.34
  5. Step 5: Solve for x
    x = 48,541,969,581.34/252,490.37
  6. Step 6: Final answer
    x = 192,252.76

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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.