Home / 282,239.60-389,489.28-154,917.36

Finding the Fourth Proportional to 282,239.60, 389,489.28 and 154,917.36

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Solution

The fourth proportional to 282,239.60, 389,489.28 and 154,917.36 is: 213,785.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,239.60 : 389,489.28 = 154,917.36 : x
  2. Step 2: Convert to fraction form
    282,239.60/389,489.28 = 154,917.36/x
  3. Step 3: Cross multiply
    282,239.60x = 389,489.28 × 154,917.36
  4. Step 4: Simplify right side
    282,239.60x = 60,338,651,005.90
  5. Step 5: Solve for x
    x = 60,338,651,005.90/282,239.60
  6. Step 6: Final answer
    x = 213,785.21

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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.