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Finding the Fourth Proportional to 449,080.40, 672,065.40 and 309,112.40

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Solution

The fourth proportional to 449,080.40, 672,065.40 and 309,112.40 is: 462,598.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,080.40 : 672,065.40 = 309,112.40 : x
  2. Step 2: Convert to fraction form
    449,080.40/672,065.40 = 309,112.40/x
  3. Step 3: Cross multiply
    449,080.40x = 672,065.40 × 309,112.40
  4. Step 4: Simplify right side
    449,080.40x = 207,743,748,750.96
  5. Step 5: Solve for x
    x = 207,743,748,750.96/449,080.40
  6. Step 6: Final answer
    x = 462,598.12

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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.