Home / 282,454.16-389,805.82-155,131.07

Finding the Fourth Proportional to 282,454.16, 389,805.82 and 155,131.07

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Solution

The fourth proportional to 282,454.16, 389,805.82 and 155,131.07 is: 214,091.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,454.16 : 389,805.82 = 155,131.07 : x
  2. Step 2: Convert to fraction form
    282,454.16/389,805.82 = 155,131.07/x
  3. Step 3: Cross multiply
    282,454.16x = 389,805.82 × 155,131.07
  4. Step 4: Simplify right side
    282,454.16x = 60,470,991,611.97
  5. Step 5: Solve for x
    x = 60,470,991,611.97/282,454.16
  6. Step 6: Final answer
    x = 214,091.35

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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.