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Finding the Fourth Proportional to 303,815.88, 455,418.72 and 103,999.68

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Solution

The fourth proportional to 303,815.88, 455,418.72 and 103,999.68 is: 155,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,815.88 : 455,418.72 = 103,999.68 : x
  2. Step 2: Convert to fraction form
    303,815.88/455,418.72 = 103,999.68/x
  3. Step 3: Cross multiply
    303,815.88x = 455,418.72 × 103,999.68
  4. Step 4: Simplify right side
    303,815.88x = 47,363,401,146.01
  5. Step 5: Solve for x
    x = 47,363,401,146.01/303,815.88
  6. Step 6: Final answer
    x = 155,895.08

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1.5x scale

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.