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Finding the Fourth Proportional to 231,585, 319,587.30 and 130,980.84

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Solution

The fourth proportional to 231,585, 319,587.30 and 130,980.84 is: 180,753.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,585 : 319,587.30 = 130,980.84 : x
  2. Step 2: Convert to fraction form
    231,585/319,587.30 = 130,980.84/x
  3. Step 3: Cross multiply
    231,585x = 319,587.30 × 130,980.84
  4. Step 4: Simplify right side
    231,585x = 41,859,813,007.33
  5. Step 5: Solve for x
    x = 41,859,813,007.33/231,585
  6. Step 6: Final answer
    x = 180,753.56

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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.