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Finding the Fourth Proportional to 324,386.40, 486,579.60 and 309,624.15

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Solution

The fourth proportional to 324,386.40, 486,579.60 and 309,624.15 is: 464,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,386.40 : 486,579.60 = 309,624.15 : x
  2. Step 2: Convert to fraction form
    324,386.40/486,579.60 = 309,624.15/x
  3. Step 3: Cross multiply
    324,386.40x = 486,579.60 × 309,624.15
  4. Step 4: Simplify right side
    324,386.40x = 150,656,795,057.34
  5. Step 5: Solve for x
    x = 150,656,795,057.34/324,386.40
  6. Step 6: Final answer
    x = 464,436.23

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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.