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Finding the Fourth Proportional to 492,788.40, 680,048.96 and 266,433.90

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Solution

The fourth proportional to 492,788.40, 680,048.96 and 266,433.90 is: 367,679.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,788.40 : 680,048.96 = 266,433.90 : x
  2. Step 2: Convert to fraction form
    492,788.40/680,048.96 = 266,433.90/x
  3. Step 3: Cross multiply
    492,788.40x = 680,048.96 × 266,433.90
  4. Step 4: Simplify right side
    492,788.40x = 181,188,096,603.74
  5. Step 5: Solve for x
    x = 181,188,096,603.74/492,788.40
  6. Step 6: Final answer
    x = 367,679.31

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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.