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Finding the Fourth Proportional to 386,064.06, 579,187.19 and 133,346.64

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Solution

The fourth proportional to 386,064.06, 579,187.19 and 133,346.64 is: 200,051.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,064.06 : 579,187.19 = 133,346.64 : x
  2. Step 2: Convert to fraction form
    386,064.06/579,187.19 = 133,346.64/x
  3. Step 3: Cross multiply
    386,064.06x = 579,187.19 × 133,346.64
  4. Step 4: Simplify right side
    386,064.06x = 77,232,662,154.87
  5. Step 5: Solve for x
    x = 77,232,662,154.87/386,064.06
  6. Step 6: Final answer
    x = 200,051.42

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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.