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Finding the Fourth Proportional to 386,339.36, 579,483.56 and 133,561.04

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Solution

The fourth proportional to 386,339.36, 579,483.56 and 133,561.04 is: 200,332.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,339.36 : 579,483.56 = 133,561.04 : x
  2. Step 2: Convert to fraction form
    386,339.36/579,483.56 = 133,561.04/x
  3. Step 3: Cross multiply
    386,339.36x = 579,483.56 × 133,561.04
  4. Step 4: Simplify right side
    386,339.36x = 77,396,426,936.50
  5. Step 5: Solve for x
    x = 77,396,426,936.50/386,339.36
  6. Step 6: Final answer
    x = 200,332.75

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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.