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Finding the Fourth Proportional to 386,674.36, 579,873.03 and 133,886.93

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Solution

The fourth proportional to 386,674.36, 579,873.03 and 133,886.93 is: 200,782.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,674.36 : 579,873.03 = 133,886.93 : x
  2. Step 2: Convert to fraction form
    386,674.36/579,873.03 = 133,886.93/x
  3. Step 3: Cross multiply
    386,674.36x = 579,873.03 × 133,886.93
  4. Step 4: Simplify right side
    386,674.36x = 77,637,416,375.06
  5. Step 5: Solve for x
    x = 77,637,416,375.06/386,674.36
  6. Step 6: Final answer
    x = 200,782.43

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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.