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Finding the Fourth Proportional to 484,553.45, 668,690.10 and 266,787.45

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Solution

The fourth proportional to 484,553.45, 668,690.10 and 266,787.45 is: 368,170.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,553.45 : 668,690.10 = 266,787.45 : x
  2. Step 2: Convert to fraction form
    484,553.45/668,690.10 = 266,787.45/x
  3. Step 3: Cross multiply
    484,553.45x = 668,690.10 × 266,787.45
  4. Step 4: Simplify right side
    484,553.45x = 178,398,126,619.25
  5. Step 5: Solve for x
    x = 178,398,126,619.25/484,553.45
  6. Step 6: Final answer
    x = 368,170.17

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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.