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Finding the Fourth Proportional to 386,833.15, 580,043.13 and 134,048.80

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Solution

The fourth proportional to 386,833.15, 580,043.13 and 134,048.80 is: 201,001.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,833.15 : 580,043.13 = 134,048.80 : x
  2. Step 2: Convert to fraction form
    386,833.15/580,043.13 = 134,048.80/x
  3. Step 3: Cross multiply
    386,833.15x = 580,043.13 × 134,048.80
  4. Step 4: Simplify right side
    386,833.15x = 77,754,085,524.74
  5. Step 5: Solve for x
    x = 77,754,085,524.74/386,833.15
  6. Step 6: Final answer
    x = 201,001.61

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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.