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Finding the Fourth Proportional to 252,687.12, 348,708 and 139,510.56

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Solution

The fourth proportional to 252,687.12, 348,708 and 139,510.56 is: 192,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,687.12 : 348,708 = 139,510.56 : x
  2. Step 2: Convert to fraction form
    252,687.12/348,708 = 139,510.56/x
  3. Step 3: Cross multiply
    252,687.12x = 348,708 × 139,510.56
  4. Step 4: Simplify right side
    252,687.12x = 48,648,448,356.48
  5. Step 5: Solve for x
    x = 48,648,448,356.48/252,687.12
  6. Step 6: Final answer
    x = 192,524.45

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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.