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Finding the Fourth Proportional to 328,244.60, 492,519.99 and 128,513.18

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Solution

The fourth proportional to 328,244.60, 492,519.99 and 128,513.18 is: 192,829.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,244.60 : 492,519.99 = 128,513.18 : x
  2. Step 2: Convert to fraction form
    328,244.60/492,519.99 = 128,513.18/x
  3. Step 3: Cross multiply
    328,244.60x = 492,519.99 × 128,513.18
  4. Step 4: Simplify right side
    328,244.60x = 63,295,310,128.47
  5. Step 5: Solve for x
    x = 63,295,310,128.47/328,244.60
  6. Step 6: Final answer
    x = 192,829.71

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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.