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Finding the Fourth Proportional to 251,700.90, 377,609.79 and 83,211.06

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Solution

The fourth proportional to 251,700.90, 377,609.79 and 83,211.06 is: 124,835.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,700.90 : 377,609.79 = 83,211.06 : x
  2. Step 2: Convert to fraction form
    251,700.90/377,609.79 = 83,211.06/x
  3. Step 3: Cross multiply
    251,700.90x = 377,609.79 × 83,211.06
  4. Step 4: Simplify right side
    251,700.90x = 31,421,310,892.28
  5. Step 5: Solve for x
    x = 31,421,310,892.28/251,700.90
  6. Step 6: Final answer
    x = 124,835.91

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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.