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Finding the Fourth Proportional to 330,178.72, 455,841.10 and 201,165.88

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Solution

The fourth proportional to 330,178.72, 455,841.10 and 201,165.88 is: 277,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,178.72 : 455,841.10 = 201,165.88 : x
  2. Step 2: Convert to fraction form
    330,178.72/455,841.10 = 201,165.88/x
  3. Step 3: Cross multiply
    330,178.72x = 455,841.10 × 201,165.88
  4. Step 4: Simplify right side
    330,178.72x = 91,699,676,021.67
  5. Step 5: Solve for x
    x = 91,699,676,021.67/330,178.72
  6. Step 6: Final answer
    x = 277,727.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.