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Finding the Fourth Proportional to 324,485.80, 486,728.70 and 312,044.20

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Solution

The fourth proportional to 324,485.80, 486,728.70 and 312,044.20 is: 468,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,485.80 : 486,728.70 = 312,044.20 : x
  2. Step 2: Convert to fraction form
    324,485.80/486,728.70 = 312,044.20/x
  3. Step 3: Cross multiply
    324,485.80x = 486,728.70 × 312,044.20
  4. Step 4: Simplify right side
    324,485.80x = 151,880,867,808.54
  5. Step 5: Solve for x
    x = 151,880,867,808.54/324,485.80
  6. Step 6: Final answer
    x = 468,066.30

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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.