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Finding the Fourth Proportional to 258,461.47, 387,692.55 and 125,361.34

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Solution

The fourth proportional to 258,461.47, 387,692.55 and 125,361.34 is: 188,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,461.47 : 387,692.55 = 125,361.34 : x
  2. Step 2: Convert to fraction form
    258,461.47/387,692.55 = 125,361.34/x
  3. Step 3: Cross multiply
    258,461.47x = 387,692.55 × 125,361.34
  4. Step 4: Simplify right side
    258,461.47x = 48,601,657,576.02
  5. Step 5: Solve for x
    x = 48,601,657,576.02/258,461.47
  6. Step 6: Final answer
    x = 188,042.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.