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Finding the Fourth Proportional to 393,467.20, 590,200.80 and 298,988.80

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Solution

The fourth proportional to 393,467.20, 590,200.80 and 298,988.80 is: 448,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,467.20 : 590,200.80 = 298,988.80 : x
  2. Step 2: Convert to fraction form
    393,467.20/590,200.80 = 298,988.80/x
  3. Step 3: Cross multiply
    393,467.20x = 590,200.80 × 298,988.80
  4. Step 4: Simplify right side
    393,467.20x = 176,463,428,951.04
  5. Step 5: Solve for x
    x = 176,463,428,951.04/393,467.20
  6. Step 6: Final answer
    x = 448,483.20

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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.