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Finding the Fourth Proportional to 303,431.62, 455,157.18 and 103,743.94

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Solution

The fourth proportional to 303,431.62, 455,157.18 and 103,743.94 is: 155,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,431.62 : 455,157.18 = 103,743.94 : x
  2. Step 2: Convert to fraction form
    303,431.62/455,157.18 = 103,743.94/x
  3. Step 3: Cross multiply
    303,431.62x = 455,157.18 × 103,743.94
  4. Step 4: Simplify right side
    303,431.62x = 47,219,799,172.49
  5. Step 5: Solve for x
    x = 47,219,799,172.49/303,431.62
  6. Step 6: Final answer
    x = 155,619.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.