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Finding the Fourth Proportional to 328,520.70, 492,781.05 and 270,200.70

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Solution

The fourth proportional to 328,520.70, 492,781.05 and 270,200.70 is: 405,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,520.70 : 492,781.05 = 270,200.70 : x
  2. Step 2: Convert to fraction form
    328,520.70/492,781.05 = 270,200.70/x
  3. Step 3: Cross multiply
    328,520.70x = 492,781.05 × 270,200.70
  4. Step 4: Simplify right side
    328,520.70x = 133,149,784,656.74
  5. Step 5: Solve for x
    x = 133,149,784,656.74/328,520.70
  6. Step 6: Final answer
    x = 405,301.05

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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.