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Finding the Fourth Proportional to 344,205.40, 516,308.10 and 309,213.40

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Solution

The fourth proportional to 344,205.40, 516,308.10 and 309,213.40 is: 463,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,205.40 : 516,308.10 = 309,213.40 : x
  2. Step 2: Convert to fraction form
    344,205.40/516,308.10 = 309,213.40/x
  3. Step 3: Cross multiply
    344,205.40x = 516,308.10 × 309,213.40
  4. Step 4: Simplify right side
    344,205.40x = 159,649,383,048.54
  5. Step 5: Solve for x
    x = 159,649,383,048.54/344,205.40
  6. Step 6: Final answer
    x = 463,820.10

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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.