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Finding the Fourth Proportional to 492,978.78, 680,311.17 and 266,624.28

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Solution

The fourth proportional to 492,978.78, 680,311.17 and 266,624.28 is: 367,941.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,978.78 : 680,311.17 = 266,624.28 : x
  2. Step 2: Convert to fraction form
    492,978.78/680,311.17 = 266,624.28/x
  3. Step 3: Cross multiply
    492,978.78x = 680,311.17 × 266,624.28
  4. Step 4: Simplify right side
    492,978.78x = 181,387,475,877.21
  5. Step 5: Solve for x
    x = 181,387,475,877.21/492,978.78
  6. Step 6: Final answer
    x = 367,941.75

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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.