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Finding the Fourth Proportional to 316,026.72, 436,108.50 and 186,971.85

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Solution

The fourth proportional to 316,026.72, 436,108.50 and 186,971.85 is: 258,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,026.72 : 436,108.50 = 186,971.85 : x
  2. Step 2: Convert to fraction form
    316,026.72/436,108.50 = 186,971.85/x
  3. Step 3: Cross multiply
    316,026.72x = 436,108.50 × 186,971.85
  4. Step 4: Simplify right side
    316,026.72x = 81,540,013,045.73
  5. Step 5: Solve for x
    x = 81,540,013,045.73/316,026.72
  6. Step 6: Final answer
    x = 258,016.20

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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.