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Finding the Fourth Proportional to 251,985.40, 378,123.90 and 94,229.80

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Solution

The fourth proportional to 251,985.40, 378,123.90 and 94,229.80 is: 141,399.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,985.40 : 378,123.90 = 94,229.80 : x
  2. Step 2: Convert to fraction form
    251,985.40/378,123.90 = 94,229.80/x
  3. Step 3: Cross multiply
    251,985.40x = 378,123.90 × 94,229.80
  4. Step 4: Simplify right side
    251,985.40x = 35,630,539,472.22
  5. Step 5: Solve for x
    x = 35,630,539,472.22/251,985.40
  6. Step 6: Final answer
    x = 141,399.22

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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.