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Finding the Fourth Proportional to 387,696.66, 581,544.38 and 121,477.61

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Solution

The fourth proportional to 387,696.66, 581,544.38 and 121,477.61 is: 182,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,696.66 : 581,544.38 = 121,477.61 : x
  2. Step 2: Convert to fraction form
    387,696.66/581,544.38 = 121,477.61/x
  3. Step 3: Cross multiply
    387,696.66x = 581,544.38 × 121,477.61
  4. Step 4: Simplify right side
    387,696.66x = 70,644,618,787.30
  5. Step 5: Solve for x
    x = 70,644,618,787.30/387,696.66
  6. Step 6: Final answer
    x = 182,216.22

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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.