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Finding the Fourth Proportional to 298,369.12, 411,749.40 and 162,403.60

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Solution

The fourth proportional to 298,369.12, 411,749.40 and 162,403.60 is: 224,116.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,369.12 : 411,749.40 = 162,403.60 : x
  2. Step 2: Convert to fraction form
    298,369.12/411,749.40 = 162,403.60/x
  3. Step 3: Cross multiply
    298,369.12x = 411,749.40 × 162,403.60
  4. Step 4: Simplify right side
    298,369.12x = 66,869,584,857.84
  5. Step 5: Solve for x
    x = 66,869,584,857.84/298,369.12
  6. Step 6: Final answer
    x = 224,116.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.