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Finding the Fourth Proportional to 351,287.80, 526,933.05 and 85,047.91

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Solution

The fourth proportional to 351,287.80, 526,933.05 and 85,047.91 is: 127,572.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,287.80 : 526,933.05 = 85,047.91 : x
  2. Step 2: Convert to fraction form
    351,287.80/526,933.05 = 85,047.91/x
  3. Step 3: Cross multiply
    351,287.80x = 526,933.05 × 85,047.91
  4. Step 4: Simplify right side
    351,287.80x = 44,814,554,612.43
  5. Step 5: Solve for x
    x = 44,814,554,612.43/351,287.80
  6. Step 6: Final answer
    x = 127,572.19

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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.