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Finding the Fourth Proportional to 303,399.90, 455,391.45 and 153,809.10

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Solution

The fourth proportional to 303,399.90, 455,391.45 and 153,809.10 is: 230,861.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,399.90 : 455,391.45 = 153,809.10 : x
  2. Step 2: Convert to fraction form
    303,399.90/455,391.45 = 153,809.10/x
  3. Step 3: Cross multiply
    303,399.90x = 455,391.45 × 153,809.10
  4. Step 4: Simplify right side
    303,399.90x = 70,043,349,072.20
  5. Step 5: Solve for x
    x = 70,043,349,072.20/303,399.90
  6. Step 6: Final answer
    x = 230,861.48

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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.