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Finding the Fourth Proportional to 324,059.40, 486,089.10 and 205,864.20

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Solution

The fourth proportional to 324,059.40, 486,089.10 and 205,864.20 is: 308,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,059.40 : 486,089.10 = 205,864.20 : x
  2. Step 2: Convert to fraction form
    324,059.40/486,089.10 = 205,864.20/x
  3. Step 3: Cross multiply
    324,059.40x = 486,089.10 × 205,864.20
  4. Step 4: Simplify right side
    324,059.40x = 100,068,343,700.22
  5. Step 5: Solve for x
    x = 100,068,343,700.22/324,059.40
  6. Step 6: Final answer
    x = 308,796.30

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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.