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Finding the Fourth Proportional to 328,550.07, 492,825.11 and 128,964.45

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Solution

The fourth proportional to 328,550.07, 492,825.11 and 128,964.45 is: 193,446.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,550.07 : 492,825.11 = 128,964.45 : x
  2. Step 2: Convert to fraction form
    328,550.07/492,825.11 = 128,964.45/x
  3. Step 3: Cross multiply
    328,550.07x = 492,825.11 × 128,964.45
  4. Step 4: Simplify right side
    328,550.07x = 63,556,918,612.52
  5. Step 5: Solve for x
    x = 63,556,918,612.52/328,550.07
  6. Step 6: Final answer
    x = 193,446.68

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Similar ratio
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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.