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Finding the Fourth Proportional to 252,938.61, 349,052.81 and 139,758.93

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Solution

The fourth proportional to 252,938.61, 349,052.81 and 139,758.93 is: 192,865.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,938.61 : 349,052.81 = 139,758.93 : x
  2. Step 2: Convert to fraction form
    252,938.61/349,052.81 = 139,758.93/x
  3. Step 3: Cross multiply
    252,938.61x = 349,052.81 × 139,758.93
  4. Step 4: Simplify right side
    252,938.61x = 48,783,246,540.30
  5. Step 5: Solve for x
    x = 48,783,246,540.30/252,938.61
  6. Step 6: Final answer
    x = 192,865.95

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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.