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Finding the Fourth Proportional to 393,495.67, 543,053.73 and 240,562.81

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Solution

The fourth proportional to 393,495.67, 543,053.73 and 240,562.81 is: 331,994.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,495.67 : 543,053.73 = 240,562.81 : x
  2. Step 2: Convert to fraction form
    393,495.67/543,053.73 = 240,562.81/x
  3. Step 3: Cross multiply
    393,495.67x = 543,053.73 × 240,562.81
  4. Step 4: Simplify right side
    393,495.67x = 130,638,531,269.78
  5. Step 5: Solve for x
    x = 130,638,531,269.78/393,495.67
  6. Step 6: Final answer
    x = 331,994.84

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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.