Home / 428,862.08-643,294.80-179,369.12

Finding the Fourth Proportional to 428,862.08, 643,294.80 and 179,369.12

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Solution

The fourth proportional to 428,862.08, 643,294.80 and 179,369.12 is: 269,054.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,862.08 : 643,294.80 = 179,369.12 : x
  2. Step 2: Convert to fraction form
    428,862.08/643,294.80 = 179,369.12/x
  3. Step 3: Cross multiply
    428,862.08x = 643,294.80 × 179,369.12
  4. Step 4: Simplify right side
    428,862.08x = 115,387,222,176.58
  5. Step 5: Solve for x
    x = 115,387,222,176.58/428,862.08
  6. Step 6: Final answer
    x = 269,054.38

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.