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Finding the Fourth Proportional to 456,099.80, 684,149.70 and 219,466.40

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Solution

The fourth proportional to 456,099.80, 684,149.70 and 219,466.40 is: 329,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,099.80 : 684,149.70 = 219,466.40 : x
  2. Step 2: Convert to fraction form
    456,099.80/684,149.70 = 219,466.40/x
  3. Step 3: Cross multiply
    456,099.80x = 684,149.70 × 219,466.40
  4. Step 4: Simplify right side
    456,099.80x = 150,147,871,720.08
  5. Step 5: Solve for x
    x = 150,147,871,720.08/456,099.80
  6. Step 6: Final answer
    x = 329,199.60

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Double scale
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Similar ratio
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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.