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Finding the Fourth Proportional to 304,812.40, 457,218.60 and 298,980.40

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Solution

The fourth proportional to 304,812.40, 457,218.60 and 298,980.40 is: 448,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,812.40 : 457,218.60 = 298,980.40 : x
  2. Step 2: Convert to fraction form
    304,812.40/457,218.60 = 298,980.40/x
  3. Step 3: Cross multiply
    304,812.40x = 457,218.60 × 298,980.40
  4. Step 4: Simplify right side
    304,812.40x = 136,699,399,915.44
  5. Step 5: Solve for x
    x = 136,699,399,915.44/304,812.40
  6. Step 6: Final answer
    x = 448,470.60

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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.