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Finding the Fourth Proportional to 303,442.72, 455,165.16 and 103,907.32

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Solution

The fourth proportional to 303,442.72, 455,165.16 and 103,907.32 is: 155,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,442.72 : 455,165.16 = 103,907.32 : x
  2. Step 2: Convert to fraction form
    303,442.72/455,165.16 = 103,907.32/x
  3. Step 3: Cross multiply
    303,442.72x = 455,165.16 × 103,907.32
  4. Step 4: Simplify right side
    303,442.72x = 47,294,991,932.97
  5. Step 5: Solve for x
    x = 47,294,991,932.97/303,442.72
  6. Step 6: Final answer
    x = 155,861.35

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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.