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Finding the Fourth Proportional to 251,587.55, 377,381.40 and 172,461.89

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Solution

The fourth proportional to 251,587.55, 377,381.40 and 172,461.89 is: 258,692.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,587.55 : 377,381.40 = 172,461.89 : x
  2. Step 2: Convert to fraction form
    251,587.55/377,381.40 = 172,461.89/x
  3. Step 3: Cross multiply
    251,587.55x = 377,381.40 × 172,461.89
  4. Step 4: Simplify right side
    251,587.55x = 65,083,909,791.57
  5. Step 5: Solve for x
    x = 65,083,909,791.57/251,587.55
  6. Step 6: Final answer
    x = 258,692.89

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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.