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Finding the Fourth Proportional to 279,477.14, 385,553.85 and 188,803.94

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Solution

The fourth proportional to 279,477.14, 385,553.85 and 188,803.94 is: 260,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,477.14 : 385,553.85 = 188,803.94 : x
  2. Step 2: Convert to fraction form
    279,477.14/385,553.85 = 188,803.94/x
  3. Step 3: Cross multiply
    279,477.14x = 385,553.85 × 188,803.94
  4. Step 4: Simplify right side
    279,477.14x = 72,794,085,962.17
  5. Step 5: Solve for x
    x = 72,794,085,962.17/279,477.14
  6. Step 6: Final answer
    x = 260,465.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.