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Finding the Fourth Proportional to 328,858.40, 493,287.60 and 299,309.60

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Solution

The fourth proportional to 328,858.40, 493,287.60 and 299,309.60 is: 448,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,858.40 : 493,287.60 = 299,309.60 : x
  2. Step 2: Convert to fraction form
    328,858.40/493,287.60 = 299,309.60/x
  3. Step 3: Cross multiply
    328,858.40x = 493,287.60 × 299,309.60
  4. Step 4: Simplify right side
    328,858.40x = 147,645,714,240.96
  5. Step 5: Solve for x
    x = 147,645,714,240.96/328,858.40
  6. Step 6: Final answer
    x = 448,964.40

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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.