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Finding the Fourth Proportional to 492,799.78, 680,063.70 and 266,445.28

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Solution

The fourth proportional to 492,799.78, 680,063.70 and 266,445.28 is: 367,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,799.78 : 680,063.70 = 266,445.28 : x
  2. Step 2: Convert to fraction form
    492,799.78/680,063.70 = 266,445.28/x
  3. Step 3: Cross multiply
    492,799.78x = 680,063.70 × 266,445.28
  4. Step 4: Simplify right side
    492,799.78x = 181,199,763,314.83
  5. Step 5: Solve for x
    x = 181,199,763,314.83/492,799.78
  6. Step 6: Final answer
    x = 367,694.49

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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.