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Finding the Fourth Proportional to 387,362.73, 579,794.18 and 200,116.65

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Solution

The fourth proportional to 387,362.73, 579,794.18 and 200,116.65 is: 299,529.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,362.73 : 579,794.18 = 200,116.65 : x
  2. Step 2: Convert to fraction form
    387,362.73/579,794.18 = 200,116.65/x
  3. Step 3: Cross multiply
    387,362.73x = 579,794.18 × 200,116.65
  4. Step 4: Simplify right side
    387,362.73x = 116,026,467,990.51
  5. Step 5: Solve for x
    x = 116,026,467,990.51/387,362.73
  6. Step 6: Final answer
    x = 299,529.25

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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.