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Finding the Fourth Proportional to 303,336.90, 455,005.35 and 299,400.30

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Solution

The fourth proportional to 303,336.90, 455,005.35 and 299,400.30 is: 449,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,336.90 : 455,005.35 = 299,400.30 : x
  2. Step 2: Convert to fraction form
    303,336.90/455,005.35 = 299,400.30/x
  3. Step 3: Cross multiply
    303,336.90x = 455,005.35 × 299,400.30
  4. Step 4: Simplify right side
    303,336.90x = 136,228,738,291.61
  5. Step 5: Solve for x
    x = 136,228,738,291.61/303,336.90
  6. Step 6: Final answer
    x = 449,100.45

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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.