Home / 308,895.12-426,283.38-172,928.48

Finding the Fourth Proportional to 308,895.12, 426,283.38 and 172,928.48

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Solution

The fourth proportional to 308,895.12, 426,283.38 and 172,928.48 is: 238,645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,895.12 : 426,283.38 = 172,928.48 : x
  2. Step 2: Convert to fraction form
    308,895.12/426,283.38 = 172,928.48/x
  3. Step 3: Cross multiply
    308,895.12x = 426,283.38 × 172,928.48
  4. Step 4: Simplify right side
    308,895.12x = 73,716,534,821.25
  5. Step 5: Solve for x
    x = 73,716,534,821.25/308,895.12
  6. Step 6: Final answer
    x = 238,645.84

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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.