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Finding the Fourth Proportional to 303,319.03, 454,978.09 and 103,640.92

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Solution

The fourth proportional to 303,319.03, 454,978.09 and 103,640.92 is: 155,461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,319.03 : 454,978.09 = 103,640.92 : x
  2. Step 2: Convert to fraction form
    303,319.03/454,978.09 = 103,640.92/x
  3. Step 3: Cross multiply
    303,319.03x = 454,978.09 × 103,640.92
  4. Step 4: Simplify right side
    303,319.03x = 47,154,347,827.44
  5. Step 5: Solve for x
    x = 47,154,347,827.44/303,319.03
  6. Step 6: Final answer
    x = 155,461.22

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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.