Home / 328,726.24-492,899.19-128,812.57

Finding the Fourth Proportional to 328,726.24, 492,899.19 and 128,812.57

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Solution

The fourth proportional to 328,726.24, 492,899.19 and 128,812.57 is: 193,144.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,726.24 : 492,899.19 = 128,812.57 : x
  2. Step 2: Convert to fraction form
    328,726.24/492,899.19 = 128,812.57/x
  3. Step 3: Cross multiply
    328,726.24x = 492,899.19 × 128,812.57
  4. Step 4: Simplify right side
    328,726.24x = 63,491,611,414.82
  5. Step 5: Solve for x
    x = 63,491,611,414.82/328,726.24
  6. Step 6: Final answer
    x = 193,144.34

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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.