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Finding the Fourth Proportional to 240,123.10, 359,710.80 and 121,879.30

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Solution

The fourth proportional to 240,123.10, 359,710.80 and 121,879.30 is: 182,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,123.10 : 359,710.80 = 121,879.30 : x
  2. Step 2: Convert to fraction form
    240,123.10/359,710.80 = 121,879.30/x
  3. Step 3: Cross multiply
    240,123.10x = 359,710.80 × 121,879.30
  4. Step 4: Simplify right side
    240,123.10x = 43,841,300,506.44
  5. Step 5: Solve for x
    x = 43,841,300,506.44/240,123.10
  6. Step 6: Final answer
    x = 182,578.44

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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.