Home / 282,331.86-389,618.73-155,015.70

Finding the Fourth Proportional to 282,331.86, 389,618.73 and 155,015.70

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Solution

The fourth proportional to 282,331.86, 389,618.73 and 155,015.70 is: 213,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,331.86 : 389,618.73 = 155,015.70 : x
  2. Step 2: Convert to fraction form
    282,331.86/389,618.73 = 155,015.70/x
  3. Step 3: Cross multiply
    282,331.86x = 389,618.73 × 155,015.70
  4. Step 4: Simplify right side
    282,331.86x = 60,397,020,164.06
  5. Step 5: Solve for x
    x = 60,397,020,164.06/282,331.86
  6. Step 6: Final answer
    x = 213,922.09

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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.