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Finding the Fourth Proportional to 398,961.60, 598,469.40 and 162,308.40

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Solution

The fourth proportional to 398,961.60, 598,469.40 and 162,308.40 is: 243,473.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,961.60 : 598,469.40 = 162,308.40 : x
  2. Step 2: Convert to fraction form
    398,961.60/598,469.40 = 162,308.40/x
  3. Step 3: Cross multiply
    398,961.60x = 598,469.40 × 162,308.40
  4. Step 4: Simplify right side
    398,961.60x = 97,136,610,762.96
  5. Step 5: Solve for x
    x = 97,136,610,762.96/398,961.60
  6. Step 6: Final answer
    x = 243,473.58

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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.