Home / 282,431.54-389,755.06-155,107.13

Finding the Fourth Proportional to 282,431.54, 389,755.06 and 155,107.13

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Solution

The fourth proportional to 282,431.54, 389,755.06 and 155,107.13 is: 214,047.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,431.54 : 389,755.06 = 155,107.13 : x
  2. Step 2: Convert to fraction form
    282,431.54/389,755.06 = 155,107.13/x
  3. Step 3: Cross multiply
    282,431.54x = 389,755.06 × 155,107.13
  4. Step 4: Simplify right side
    282,431.54x = 60,453,788,759.58
  5. Step 5: Solve for x
    x = 60,453,788,759.58/282,431.54
  6. Step 6: Final answer
    x = 214,047.58

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1.5x scale

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.