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Finding the Fourth Proportional to 316,576.38, 436,878 and 187,521.96

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Solution

The fourth proportional to 316,576.38, 436,878 and 187,521.96 is: 258,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,576.38 : 436,878 = 187,521.96 : x
  2. Step 2: Convert to fraction form
    316,576.38/436,878 = 187,521.96/x
  3. Step 3: Cross multiply
    316,576.38x = 436,878 × 187,521.96
  4. Step 4: Simplify right side
    316,576.38x = 81,924,218,840.88
  5. Step 5: Solve for x
    x = 81,924,218,840.88/316,576.38
  6. Step 6: Final answer
    x = 258,781.84

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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.