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Finding the Fourth Proportional to 245,276.62, 367,960.56 and 85,345.90

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Solution

The fourth proportional to 245,276.62, 367,960.56 and 85,345.90 is: 128,034.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,276.62 : 367,960.56 = 85,345.90 : x
  2. Step 2: Convert to fraction form
    245,276.62/367,960.56 = 85,345.90/x
  3. Step 3: Cross multiply
    245,276.62x = 367,960.56 × 85,345.90
  4. Step 4: Simplify right side
    245,276.62x = 31,403,925,157.70
  5. Step 5: Solve for x
    x = 31,403,925,157.70/245,276.62
  6. Step 6: Final answer
    x = 128,034.73

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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.