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Finding the Fourth Proportional to 267,429.60, 401,047.20 and 89,942.40

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Solution

The fourth proportional to 267,429.60, 401,047.20 and 89,942.40 is: 134,880.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,429.60 : 401,047.20 = 89,942.40 : x
  2. Step 2: Convert to fraction form
    267,429.60/401,047.20 = 89,942.40/x
  3. Step 3: Cross multiply
    267,429.60x = 401,047.20 × 89,942.40
  4. Step 4: Simplify right side
    267,429.60x = 36,071,147,681.28
  5. Step 5: Solve for x
    x = 36,071,147,681.28/267,429.60
  6. Step 6: Final answer
    x = 134,880.91

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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.