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Finding the Fourth Proportional to 252,614, 348,607.35 and 139,436.78

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Solution

The fourth proportional to 252,614, 348,607.35 and 139,436.78 is: 192,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,614 : 348,607.35 = 139,436.78 : x
  2. Step 2: Convert to fraction form
    252,614/348,607.35 = 139,436.78/x
  3. Step 3: Cross multiply
    252,614x = 348,607.35 × 139,436.78
  4. Step 4: Simplify right side
    252,614x = 48,608,686,368.33
  5. Step 5: Solve for x
    x = 48,608,686,368.33/252,614
  6. Step 6: Final answer
    x = 192,422.77

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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.