Home / 384,128.05-576,192.07-103,645.30

Finding the Fourth Proportional to 384,128.05, 576,192.07 and 103,645.30

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Solution

The fourth proportional to 384,128.05, 576,192.07 and 103,645.30 is: 155,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,128.05 : 576,192.07 = 103,645.30 : x
  2. Step 2: Convert to fraction form
    384,128.05/576,192.07 = 103,645.30/x
  3. Step 3: Cross multiply
    384,128.05x = 576,192.07 × 103,645.30
  4. Step 4: Simplify right side
    384,128.05x = 59,719,599,952.77
  5. Step 5: Solve for x
    x = 59,719,599,952.77/384,128.05
  6. Step 6: Final answer
    x = 155,467.95

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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.