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Finding the Fourth Proportional to 418,329.90, 627,056.24 and 204,803.37

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Solution

The fourth proportional to 418,329.90, 627,056.24 and 204,803.37 is: 306,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,329.90 : 627,056.24 = 204,803.37 : x
  2. Step 2: Convert to fraction form
    418,329.90/627,056.24 = 204,803.37/x
  3. Step 3: Cross multiply
    418,329.90x = 627,056.24 × 204,803.37
  4. Step 4: Simplify right side
    418,329.90x = 128,423,230,107.51
  5. Step 5: Solve for x
    x = 128,423,230,107.51/418,329.90
  6. Step 6: Final answer
    x = 306,990.32

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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.