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Finding the Fourth Proportional to 492,430.59, 679,553.15 and 266,076.09

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Solution

The fourth proportional to 492,430.59, 679,553.15 and 266,076.09 is: 367,184.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,430.59 : 679,553.15 = 266,076.09 : x
  2. Step 2: Convert to fraction form
    492,430.59/679,553.15 = 266,076.09/x
  3. Step 3: Cross multiply
    492,430.59x = 679,553.15 × 266,076.09
  4. Step 4: Simplify right side
    492,430.59x = 180,812,843,768.80
  5. Step 5: Solve for x
    x = 180,812,843,768.80/492,430.59
  6. Step 6: Final answer
    x = 367,184.43

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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.