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Finding the Fourth Proportional to 252,505.86, 348,440.85 and 139,330.50

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Solution

The fourth proportional to 252,505.86, 348,440.85 and 139,330.50 is: 192,266.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,505.86 : 348,440.85 = 139,330.50 : x
  2. Step 2: Convert to fraction form
    252,505.86/348,440.85 = 139,330.50/x
  3. Step 3: Cross multiply
    252,505.86x = 348,440.85 × 139,330.50
  4. Step 4: Simplify right side
    252,505.86x = 48,548,437,850.93
  5. Step 5: Solve for x
    x = 48,548,437,850.93/252,505.86
  6. Step 6: Final answer
    x = 192,266.58

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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.