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Finding the Fourth Proportional to 245,260.49, 367,880.40 and 85,372.88

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Solution

The fourth proportional to 245,260.49, 367,880.40 and 85,372.88 is: 128,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,260.49 : 367,880.40 = 85,372.88 : x
  2. Step 2: Convert to fraction form
    245,260.49/367,880.40 = 85,372.88/x
  3. Step 3: Cross multiply
    245,260.49x = 367,880.40 × 85,372.88
  4. Step 4: Simplify right side
    245,260.49x = 31,407,007,404.15
  5. Step 5: Solve for x
    x = 31,407,007,404.15/245,260.49
  6. Step 6: Final answer
    x = 128,055.72

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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.