Home / 315,932.68-435,998.82-172,702.44

Finding the Fourth Proportional to 315,932.68, 435,998.82 and 172,702.44

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Solution

The fourth proportional to 315,932.68, 435,998.82 and 172,702.44 is: 238,335.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,932.68 : 435,998.82 = 172,702.44 : x
  2. Step 2: Convert to fraction form
    315,932.68/435,998.82 = 172,702.44/x
  3. Step 3: Cross multiply
    315,932.68x = 435,998.82 × 172,702.44
  4. Step 4: Simplify right side
    315,932.68x = 75,298,060,051.12
  5. Step 5: Solve for x
    x = 75,298,060,051.12/315,932.68
  6. Step 6: Final answer
    x = 238,335.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.