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Finding the Fourth Proportional to 330,003.80, 495,005.70 and 217,810.70

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Solution

The fourth proportional to 330,003.80, 495,005.70 and 217,810.70 is: 326,716.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,003.80 : 495,005.70 = 217,810.70 : x
  2. Step 2: Convert to fraction form
    330,003.80/495,005.70 = 217,810.70/x
  3. Step 3: Cross multiply
    330,003.80x = 495,005.70 × 217,810.70
  4. Step 4: Simplify right side
    330,003.80x = 107,817,538,020.99
  5. Step 5: Solve for x
    x = 107,817,538,020.99/330,003.80
  6. Step 6: Final answer
    x = 326,716.05

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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.