Home / 282,137.15-389,348.20-154,814.87

Finding the Fourth Proportional to 282,137.15, 389,348.20 and 154,814.87

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Solution

The fourth proportional to 282,137.15, 389,348.20 and 154,814.87 is: 213,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,137.15 : 389,348.20 = 154,814.87 : x
  2. Step 2: Convert to fraction form
    282,137.15/389,348.20 = 154,814.87/x
  3. Step 3: Cross multiply
    282,137.15x = 389,348.20 × 154,814.87
  4. Step 4: Simplify right side
    282,137.15x = 60,276,892,134.62
  5. Step 5: Solve for x
    x = 60,276,892,134.62/282,137.15
  6. Step 6: Final answer
    x = 213,643.94

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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.