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Finding the Fourth Proportional to 343,879.01, 515,652.61 and 144,145.77

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Solution

The fourth proportional to 343,879.01, 515,652.61 and 144,145.77 is: 216,149.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,879.01 : 515,652.61 = 144,145.77 : x
  2. Step 2: Convert to fraction form
    343,879.01/515,652.61 = 144,145.77/x
  3. Step 3: Cross multiply
    343,879.01x = 515,652.61 × 144,145.77
  4. Step 4: Simplify right side
    343,879.01x = 74,329,142,520.96
  5. Step 5: Solve for x
    x = 74,329,142,520.96/343,879.01
  6. Step 6: Final answer
    x = 216,149.11

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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.