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Finding the Fourth Proportional to 343,878.01, 515,651.11 and 144,144.77

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Solution

The fourth proportional to 343,878.01, 515,651.11 and 144,144.77 is: 216,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,878.01 : 515,651.11 = 144,144.77 : x
  2. Step 2: Convert to fraction form
    343,878.01/515,651.11 = 144,144.77/x
  3. Step 3: Cross multiply
    343,878.01x = 515,651.11 × 144,144.77
  4. Step 4: Simplify right side
    343,878.01x = 74,328,407,712.58
  5. Step 5: Solve for x
    x = 74,328,407,712.58/343,878.01
  6. Step 6: Final answer
    x = 216,147.60

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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.